HP (Hewlett-Packard) Business PC manuel d'utilisation

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60

Aller à la page of

Un bon manuel d’utilisation

Les règles imposent au revendeur l'obligation de fournir à l'acheteur, avec des marchandises, le manuel d’utilisation HP (Hewlett-Packard) Business PC. Le manque du manuel d’utilisation ou les informations incorrectes fournies au consommateur sont à la base d'une plainte pour non-conformité du dispositif avec le contrat. Conformément à la loi, l’inclusion du manuel d’utilisation sous une forme autre que le papier est autorisée, ce qui est souvent utilisé récemment, en incluant la forme graphique ou électronique du manuel HP (Hewlett-Packard) Business PC ou les vidéos d'instruction pour les utilisateurs. La condition est son caractère lisible et compréhensible.

Qu'est ce que le manuel d’utilisation?

Le mot vient du latin "Instructio", à savoir organiser. Ainsi, le manuel d’utilisation HP (Hewlett-Packard) Business PC décrit les étapes de la procédure. Le but du manuel d’utilisation est d’instruire, de faciliter le démarrage, l'utilisation de l'équipement ou l'exécution des actions spécifiques. Le manuel d’utilisation est une collection d'informations sur l'objet/service, une indice.

Malheureusement, peu d'utilisateurs prennent le temps de lire le manuel d’utilisation, et un bon manuel permet non seulement d’apprendre à connaître un certain nombre de fonctionnalités supplémentaires du dispositif acheté, mais aussi éviter la majorité des défaillances.

Donc, ce qui devrait contenir le manuel parfait?

Tout d'abord, le manuel d’utilisation HP (Hewlett-Packard) Business PC devrait contenir:
- informations sur les caractéristiques techniques du dispositif HP (Hewlett-Packard) Business PC
- nom du fabricant et année de fabrication HP (Hewlett-Packard) Business PC
- instructions d'utilisation, de réglage et d’entretien de l'équipement HP (Hewlett-Packard) Business PC
- signes de sécurité et attestations confirmant la conformité avec les normes pertinentes

Pourquoi nous ne lisons pas les manuels d’utilisation?

Habituellement, cela est dû au manque de temps et de certitude quant à la fonctionnalité spécifique de l'équipement acheté. Malheureusement, la connexion et le démarrage HP (Hewlett-Packard) Business PC ne suffisent pas. Le manuel d’utilisation contient un certain nombre de lignes directrices concernant les fonctionnalités spécifiques, la sécurité, les méthodes d'entretien (même les moyens qui doivent être utilisés), les défauts possibles HP (Hewlett-Packard) Business PC et les moyens de résoudre des problèmes communs lors de l'utilisation. Enfin, le manuel contient les coordonnées du service HP (Hewlett-Packard) en l'absence de l'efficacité des solutions proposées. Actuellement, les manuels d’utilisation sous la forme d'animations intéressantes et de vidéos pédagogiques qui sont meilleurs que la brochure, sont très populaires. Ce type de manuel permet à l'utilisateur de voir toute la vidéo d'instruction sans sauter les spécifications et les descriptions techniques compliquées HP (Hewlett-Packard) Business PC, comme c’est le cas pour la version papier.

Pourquoi lire le manuel d’utilisation?

Tout d'abord, il contient la réponse sur la structure, les possibilités du dispositif HP (Hewlett-Packard) Business PC, l'utilisation de divers accessoires et une gamme d'informations pour profiter pleinement de toutes les fonctionnalités et commodités.

Après un achat réussi de l’équipement/dispositif, prenez un moment pour vous familiariser avec toutes les parties du manuel d'utilisation HP (Hewlett-Packard) Business PC. À l'heure actuelle, ils sont soigneusement préparés et traduits pour qu'ils soient non seulement compréhensibles pour les utilisateurs, mais pour qu’ils remplissent leur fonction de base de l'information et d’aide.

Table des matières du manuel d’utilisation

  • Page 1

    Hardware Reference Guide - dc7700 Se ries Small Form Factor Model HP Compaq Business PC[...]

  • Page 2

    © Copyright 200 6 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice. Microsoft and Windows are trademarks o f Microsoft Corpora tion in the U.S. a nd other countries. The only warranties for HP product s and services are set forth in the express warranty statements accom panying such pr [...]

  • Page 3

    About Thi s Book This guide provides basic informati on for upgrading this comput er model. WARNING! Text s et off in this manner in dicates tha t failure to follow di rections co uld result i n bodily harm or loss of life. CAUTION Tex t set off in this manner indicates that failur e to foll ow direc tions coul d resu lt in damage to equi pment or [...]

  • Page 4

    iv About T his Book ENWW[...]

  • Page 5

    Table of contents 1 Product Features Standard Co nfiguration Features .... .......... .......... .......... .......... ........... ......... .......... ........... .......... ......... . 1 Front Pane l Components ......... ......... ......... ......... .......... ......... ......... ...... .......... ......... ......... ...... ....... ...... 2 Medi[...]

  • Page 6

    Installing a Security Lock .. ................... .................. ................... .................. .................. ...................... 47 Cable Lock .......... .............. ............... .............. .............. ............... .............. ............. ....... ..... 47 Padlock .. ............ ............ ............ ..[...]

  • Page 7

    1 Product Features Standard Confi guration Fe atures The HP Compaq Sm all Form Fac tor featur es may vary depending on the model . For a compl ete listi ng of th e hardware and software install ed in the computer, r un the d iagnostic u tility (in cluded on some compute r models onl y). Instructi ons for using the utili ty are provide d in the Trou[...]

  • Page 8

    Front Panel Compo nents Drive co nfigurati on may vary by mo del. Table 1-1 F ront Panel Component s 1 3.5-inch Media Card Re ader (optional) 1 6 Headphone Connector 2 Optical Drive Activity Light 7 USB (Universa l Serial Bus) Ports 3 5.25-inch Optical Drive 2 8 Hard Drive Activity Light 4 Optical Drive Eject Button 9 Power On Light 5 Microphone Co[...]

  • Page 9

    Media Car d Reader Com ponents The m edia card reader is an option al devic e availabl e on som e models on ly. Refer to the following illus tration a nd table t o identify the med ia card r eader com ponents. Table 1-2 M edia Card Reader Com ponents 1 SmartMedia/xD ● 3.3V SmartMedia Car d (SM) ● D-Picture Card (xD) 4 USB (Universal Se rial Bus[...]

  • Page 10

    Rear Pane l Components Table 1-3 R ear Panel Com ponents 1 Power Cord C onnector 6 RJ-45 Network Connector 2 PS/2 Mouse Connector (green) 7 Parallel Connector 3 PS/2 Keyboard Connector (purple) 8 Monitor Connector 4 Universal Serial Bus (USB) 9 Line-Out Connector fo r powered audio devices (green) 5 Serial Connector 1 10 Line-In Audio Conn ector (b[...]

  • Page 11

    Keyboard Table 1-4 Ke yboard Com ponents 1 Function Keys Perform special f unctions depending on the software applicat ion being used. 2 Editing Keys Includes the following: Insert, Home, Page Up, Delete, End, and Page Down. 3 Status Lights Indicate the status of the computer and keyboard s ettings (Num Lock, Ca ps Lock, and Scroll Lock). 4 Numeric[...]

  • Page 12

    Using the Windows Logo Key Use the Wi ndows Logo ke y in combin ation with othe r keys to perform ce rtain functi ons available in the Window s operati ng system. Refer to the Keyboar d section to identi fy the W indows Logo key. Windows Logo Key Displays or hides the Start menu Windows Logo K ey + d Displ ays th e De skt op Windows Logo K ey + m M[...]

  • Page 13

    Specia l Mouse Fu nctions Most s oftware a pplications support the use of a mouse. The functio ns assigne d to e ach mouse button depe nd on the software appli cations you are using. Serial Numb er Lo cation Each c omputer has a uniqu e seria l number l ocated on the left sid e of th e computer (1) and a product ID nu mber lo cated on the top co ve[...]

  • Page 14

    8 Chapter 1 Prod uct Featur es ENWW[...]

  • Page 15

    2 Hardware Upgrades Servicea bility Fe atures The com puter include s features that make it easy to upgr ade and servi ce. No tools are need ed for most of the inst allation proc edures de scribed in this chapte r. Warnings and Cauti ons Before performing upgrades be sure to car efully re ad all of the appli cable ins tructions , cautions, and warn[...]

  • Page 16

    Using the Small Form Fa ctor Comp uter in a Tower Orientation The S mall Form Factor c omputer ca n be used in eithe r a tower o r deskt op orient ation. To us e it in the tower o rientatio n, stand t he comput er up on its right side as shown in the illust ration below. NOTE Ensure at least 1 0.2 centimet ers (4 inche s) of space on al l sides of [...]

  • Page 17

    Unlock ing t he Smar t Cover Lock NOT E The S mart Cover Lock is a n optional feature in cluded on some m odels o nly. The Sm art Cover Lock is a softwar e-control lable cover loc k, contro lled by the setu p passwor d. This lock preve nts unauthorized acc ess to the internal components. The compu ter ships with the Smart Cover Lock in the unl ocke[...]

  • Page 18

    7. Push the m etal arm that wraps around th e air vent grid up and back ( 2) to free the Smar t Cover Lock from the chassis. Figu re 2 -2 Removi ng the Smart Cove r Lock Scr ew 8. Remove the c ompute r cove r. To reatta ch the Smart Cover Lock , secure the lock in place with the tam per-proof s crew. 12 Chapter 2 Hardwa re Upgrades ENWW[...]

  • Page 19

    Removing the Computer Cover 1. Remove/di sengage any sec urity device s that prohib it opening the computer. 2. Remo ve al l r emova ble medi a, su ch as di sket tes or c ompa ct di scs, from the compu ter . 3. Turn of f the com puter proper ly throug h the operati ng syst em, then tu rn o ff any exte rnal de vices. 4. Disconne ct the po wer cord f[...]

  • Page 20

    Replaci ng the Compute r Cove r Align t he tabs on the panel w ith the sl ots on the chassis, th en slide the cover all th e way onto the chassis unti l it lock s into place . Figure 2-4 Replaci ng the Computer Cover 14 Chapter 2 Hardwa re Upgrades ENWW[...]

  • Page 21

    Inst alling Addi tional Memo ry The com puter comes wi th double data rat e 2 synchrono us dynamic random a ccess me mory (DDR2 - SDRAM) dual inli ne memor y modules (DIMMs). DIMMs The memo ry sockets on the sy stem board can be populated wit h up to four industr y-standard DIMMs. These memory sockets ar e populated with at lea st one preinstall ed[...]

  • Page 22

    Populating D IMM Sockets There are four DIMM socket s on the system boa rd, with two sock ets per channel. Th e sockets are labeled XMM1, XMM2, XMM3 , and XMM4. So ckets XMM 1 and XM M2 opera te in mem ory cha nnel A. Socke ts XMM3 and XMM4 operate in memory channel B. Figure 2-5 DIMM So cket Loc ations Item Description Sock et Color 1 DIMM socket [...]

  • Page 23

    should be populated with the two 512MB DIMMs. With this confi guration, 2 GB will run as du al channel and 256 M B will r un as sin gle chan nel. ● In any mode, the maxim um operational speed is determined by the slowest DIMM in the sys tem. Installing DIMMs CAUTION You mu st disconne ct the power cord befor e adding or remov ing memor y modules.[...]

  • Page 24

    8. Open both latches o f the me mory mo dule socket ( 1), and in sert the me mory modu le into the socket (2). Figu re 2 -6 Installing a DIMM NOTE A me mory module can be insta lled in only on e way. Matc h the notch on the module with the tab on the m emory socket. A DIMM must occup y the black XMM 1 socket. For max imum perfo rmance, popul ate th[...]

  • Page 25

    Removing o r Insta lling an Expansi on Card The com puter has two stan dard low-profi le PCI e xpansion s lots that c an acco mmodate a n expansio n card up to 17.46 cm (6 .875 inch es) in len gth. The computer also ha s one PC I Expre ss x1 ex pansion slot and one PC I Express x16 expan sion slot. NOT E The P CI and PC I Express slots sup port onl[...]

  • Page 26

    CAUTION Regardles s of the power-o n state, v oltage is always pr esent on the sy stem board as long as the system i s plugged into an active AC outlet. Yo u must disc onnect the power co rd to av oid damag e to the i nternal component s of the c omputer. 5. If the comp uter is on a stand, remove the compu ter from the stand. 6. Remove the c ompute[...]

  • Page 27

    NOTE Before removing an insta lled exp ansion c ard, disco nnect an y cable s that m ay be attached t o the expansion card. a. If you ar e instal ling an ex pansion card in a vacant sock et, remov e the appro priate ex pansion slot cove r on the back of the chas sis. Pull the slot cover straight up then awa y from the insi de of th e cha ssis. Figu[...]

  • Page 28

    b. If you are remo ving a stand ard PCI car d, hold the ca rd at each en d, and carefu lly rock it b ack and forth until th e connec tors pull f ree from th e socket. P ull the exp ansion card st raight u p from the socket t hen away f rom the ins ide of the chassis to release it from the ch assis fram e. Be sur e not to s crape the c ard aga inst [...]

  • Page 29

    10. Store the r emoved card in anti-s tatic pa ckaging. 11. If you are not installing a new ex pansion card, ins tall an expan sion slot cover to close the open slot. CAUTION After re moving a n expans ion card, you must replace i t with a n ew card or expansio n slot cover for pr oper cooli ng of interna l component s during ope ration. 12. To ins[...]

  • Page 30

    Drive Po sitions Figure 2-13 Drive P ositions 1 3.5-inch internal hard dr ive bay 2 5.25-inch extern al drive bay for opt ional drives (optical drive s hown) 3 3.5-inch external drive bay for optio nal drives (media card reader shown) 1 1 If the computer has a 1.44-MB diskette drive installed in the 3.5-inch drive bay, it will be configured with a [...]

  • Page 31

    Inst alling and Removing Drives When ins talling add itional driv es, follow these gu idelines : ● The prima ry Serial ATA (SAT A) hard d rive mu st be co nnected to the dark blue pr imary S ATA connecto r on the system bo ard labe led SATA0. ● Connect a SATA opti cal dri ve to the wh ite SAT A connector on the system board l abeled SAT A1. ●[...]

  • Page 32

    Removing an Optical Drive CAUTION All removable media s hould be taken out of a drive before rem oving the dr ive from the compu ter. NOTE An optical drive is a CD-ROM, CD-R/RW, DVD-ROM, DV D+R/RW, or CD -RW/DVD Combo driv e. To remov e an optical dr ive: 1. Remove /disengage an y security de vices tha t prohib it opening the c omputer. 2. Remo ve [...]

  • Page 33

    8. Disconne ct the po wer cable (1) and data cable (2) f rom the r ear of the optical drive. Figure 2-15 Disconn ecting the Power and Data Cable s 9. Rotate the drive cage back d own to its normal position . CAUTION Be care ful not to pinch any cables or wire s when rotating the dr ive cage down. Figure 2-16 Rotating the Drive Cage Down ENWW Instal[...]

  • Page 34

    10. Press the gre en drive reta iner latch (1) located on the side of the drive to disen gage the driv e from the drive cag e. While pres sing the driv e retaine r latch, slide th e drive forwar d and lift it up and out of the drive cage (2). Figu re 2 -1 7 Removin g the Optical Drive NOTE To repla ce the optical driv e, revers e the removal pro ce[...]

  • Page 35

    7. Install tw o M3 metr ic guide s crews in the lower ho les on e ach side o f the dri ve. HP has provided four ext ra M3 metr ic guide screws o n the front o f the chas sis, under the comput er cove r. The M3 metric gui de screws are black. CAUTION Use only 5-mm long s crews as g uide screws. Longer scr ews can da mage the intern al componen ts of[...]

  • Page 36

    9. Rotate the drive cage to its u pright pos ition. Figu re 2 -2 0 Rotating the Drive Cage Up 10. Connect the SATA data cable to the whi te system board co nnector label ed SATA1. 11. Route the d ata cable through the cable g uides. CAUTION There are tw o cable gu ides that ke ep the data cab le from being pi nched by the drive cage when raising or[...]

  • Page 37

    13. Rotate the dr ive cage ba ck down to its n ormal po sition. CAUTION Be care ful not to pinch any cables or wire s when rotating the dr ive cage down. Figure 2-22 Rotating the Drive Cage Down 14. Replace the comp uter cover. 15. If the compute r was on a stand, r eplace the s tand. 16. Reconnect th e power cord and turn on the co mputer. 17. Loc[...]

  • Page 38

    2. Disconne ct the drive cables, as indicated in the following illu stration s: a. If you ar e remov ing a di skette d rive, disc onnect the d ata cable (1) an d power cable (2) from the back of the dr ive. Figure 2-23 Disconnec ting the Diske tte Drive Cables b. If you are remov ing a media card rea der, disconne ct the USB cable from the PC I car[...]

  • Page 39

    3. Press the green dr ive re tention l atch (1) loc ated on th e side o f the dri ve to dise ngage the dr ive from the drive cag e and slide the drive for ward appro ximately 1/ 4 inch (6 milli meters) (2) . Figure 2-25 Disengag ing the 3 .5-inch Drive (Disk ette Drive shown) 4. Lift the rear of the drive up so th at the rear gui de screws clea r t[...]

  • Page 40

    Installing a Drive into the 3. 5-inch External Drive Bay Depen ding on t he comput er configur ation, the 3.5-inch e xternal drive bay on the fr ont of t he compu ter may be configured with a media car d reader or a diskett e drive, or it may be an empty drive bay . The type of bezel cov ering the dr ive bay wi ll vary depending on the origina l co[...]

  • Page 41

    3. Align th e rear g uide scre ws with th e rear J- slots o n the drive cage an d press do wn on the rear of the driv e (1), then slide t he drive b ack unti l it loc ks into pl ace (2). Figure 2-28 Insta lling a D rive into the 3.5-inch Drive Bay (Hard Drive sh own) 4. Connect the app ropriat e drive cables: a. If instal ling a d iskette driv e, c[...]

  • Page 42

    6. Remove the dri ve bezel by pressing in ward on all t he tabs on the left, rig ht, and bottom o f the drive bezel ( 1) and pu shing the drive bez el out o f the lar ger front b ezel (2 ). NOTE The ty pe of bez el will va ry depe nding on the compute r confi guration. Figu re 2 -2 9 Remov ing a Driv e Bezel ( Diskette Drive Bezel shown) 7. Replace[...]

  • Page 43

    10. Reconnect th e power cord and turn on the co mputer. 11. Lock any s ecurity d evices tha t were di sengaged when the compu ter cover was remo ved. Removing and Replacing the Primar y 3.5-inch Internal SATA Hard Dri ve NOT E The s ystem do es not s upport P arallel A TA (PAT A) hard drives. Before you re move the old hard d rive, be sure to ba c[...]

  • Page 44

    7. Rotate t he drive c age for external drives to its up right po sition. Figu re 2 -3 1 Rotating the Drive Cage Up 8. Remove the s ecurity clip (if installed) that s ecures the rear cha ssis wall to the power supply. Figu re 2 -3 2 Removin g the Security Cl ip 38 Chapter 2 Hardwa re Upgrades ENWW[...]

  • Page 45

    9. Rotate the pow er supply cage to it s upright positi on. The hard drive is loc ated beneath th e power suppl y cage. CAUTION If the com puter has a Smart Cover Lock install ed next t o the drive c age, caref ully route al l cables around the Sm art Cover Loc k assembl y as you raise the power supply to avo id damage to the cables or lock. Figure[...]

  • Page 46

    11. P ull t he green ta b tha t loc ks the driv e in plac e a way from th e dri ve ( 1), sli de the hard driv e t oward the front of the compu ter until it stops, t hen lift t he driv e up and o ut of the bay (2). Figu re 2 -3 5 Removing the Hard Dr ive 12. To install a hard dr ive, revers e the above pro cedure. NOTE When repl acing the primar y h[...]

  • Page 47

    A Specifications Desktop Dimensions Height Width Depth (depth will increase if the computer is equipped with a port securi ty bracke t) 3.95 in 13.3 in 14.9 in 10.3 cm 33.78 cm 37.85 cm Approxi mate Weight 21 lb 9.53 kg Tem pera ture R ange Operating Nonoperating 50° to 95°F -22° to 140°F 10° to 35°C -30° to 60°C Relati ve Humidi ty (nonc o[...]

  • Page 48

    Rated Input Current (maximum ) 1 5A @ 100 V AC 2.5A @ 200 VAC 1 This system utilizes an active power factor correc ted power supply. This allows the system to pass the CE mark requirements for use in the c ountries of the European Uni on. The active power factor corrected power supply also has the added benefit of not requiring an input voltage ran[...]

  • Page 49

    B Battery Replacement The ba ttery that c omes wi th the com puter prov ides pow er to the real-ti me clock. When repl acing t he battery , use a battery e quivalent to the battery originally installed in the comput er. The compute r comes with a 3-volt lithium coi n cell bat tery. WARNING! The computer contains a n interna l lithiu m mangane se di[...]

  • Page 50

    5. If the comp uter is on a stand, remove the compu ter from the stand. 6. Remove the c ompute r cove r. CAUTION After remov ing the comput er cover, lo ok for the LED on the system board between the DIMM sockets. If the LED is illumi nated, the sys tem still has pow er. Turn off the compu ter and r emove th e power cord befor e proce eding. 7. Loc[...]

  • Page 51

    b. To inser t the new bat tery, sl ide one edge o f the repl acement ba ttery under the holder’s lip with the posi tive side u p. Push the other edge down unt il the clamp sna ps over th e other edge of the battery (2). Figure B-2 Removing and Replacing a Coin Cell Battery (Ty pe 2) Type 3 a. Pull ba ck on th e clip (1) that is holding the batter[...]

  • Page 52

    12. Reset the date and time, your passwords, and any spe cial system setups using Computer Setu p. Refer to the Computer S etup (F10) U tility G uide on the Documentat ion and D iagnostics CD . 13. Lock any s ecurity d evices that were di sengaged when the c omputer cover wa s remo ved. 46 Appen dix B Ba ttery Rep lacement ENWW[...]

  • Page 53

    C Ext ernal Securi ty Devi ces NOT E For informatio n on data secu rity features, refer t o the Compute r Setup (F10) Utili ty Guide and the Desktop Ma nagement Gu ide on the Documenta tion and D iagnostics CD and the HP ProtectToo ls Security Manager Guide (some mo dels) a t http://www.hp .com . Instal ling a Security Lo ck The sec urity lock s di[...]

  • Page 54

    Padlock Figure C-2 Insta lling a Padlock 48 Appendi x C External Securi ty Device s ENWW[...]

  • Page 55

    D Electrostatic Discharge A dis charge of static el ectricity from a fi nger or other cond uctor may damage s ystem boa rds or other stat ic-sensit ive device s. This type of damage may reduce the life expec tancy of the de vice. Preventing Electros tatic Damage To preven t electrostati c damage, obser ve the following pr ecaution s: ● Avoid hand[...]

  • Page 56

    50 Appen dix D E lectrostati c Disc harge ENWW[...]

  • Page 57

    E Computer Operating Guidelines, Routine Care and Shipping Preparation Computer Operat ing Guideli nes and Routi ne Care Follo w these guid elines to properly set up a nd care for the com puter an d monito r: ● Keep the computer away fr om excess ive moisture, direct s unlight, and extremes of heat a nd cold. ● Operate the compu ter on a sturdy[...]

  • Page 58

    Optical Drive Pr ecautions Be sur e to obser ve the fol lowing g uidelines while operating or cl eaning t he optic al drive. Operation ● Do not mov e the dr ive during operatio n. This m ay cause i t to malfu nction d uring read ing. ● Avoid ex posing the drive to sud den change s in temperatu re, as co ndensatio n may form i nside the unit. If[...]

  • Page 59

    Index A access panel locking and un locking 11, 47 audio conne ctors 2, 4 B backup an d reco very 40 battery rep lacement 43 C computer cover remo ving 13 repl acing 14 computer operatin g guidelin es 51 connect ing dri ve cab les 25 D DIMMs. See memor y diskett e drive inst alli ng 34 remo ving 31 drive s bezels 24 connecti ng cables 25 inst alli [...]

  • Page 60

    expansio n slot co ver 21 hard drive 37 media card rea der 31 optical driv e 26 PCI card 22 PCI Expr ess ca rd 22 Smart Cover Loc k 11 S secu rity ca ble lo ck 47 padlock 4 8 Smart Cover Loc k 11 seri al connector 4 serial numb er locati on 7 ship ping prepar ation 52 Smart C over Lock 11 specifi cation s co mpute r 41 memory 15 T tower o rientatio[...]