Hardware Reference GuideHP ProDesk 490 G1 Microtower

Media card reader componentsThe media card reader is an optional device available on some models only. Refer to the followingillustration and table to

Serial number locationEach computer has a unique serial number and a product ID number that are located on the exteriorof the computer. Keep these num

2 Hardware upgradesServiceability featuresThe computer includes features that make it easy to upgrade and service. A Torx T15 or flatheadscrewdriver i

Removing the computer access panelTo access internal components, you must remove the access panel:1. Remove/disengage any security devices that prohib

Replacing the computer access panelHold the access panel at an angle and slide the lip on the bottom edge of the access panel onto therail on the bott

Removing the front bezel1. Remove/disengage any security devices that prohibit opening the computer.2. Remove all removable media, such as compact dis

Removing bezel blanksOn some models, there are bezel blanks covering one or more drive bays that need to be removedbefore installing a drive. To remov

Replacing the front bezelInsert the three hooks on the bottom side of the bezel into the rectangular holes on the chassis (1)then rotate the top side

System board connectionsRefer to the following illustration and table to identify the system board connectors for your model.No. System Board Connecto

No. System Board Connector System Board Label Color Component17 USB 2.0 MEDIA black USB 2.0 Device, such as a MediaCard Reader18 Battery BAT black Bat

© Copyright 2013 Hewlett-PackardDevelopment Company, L.P. Theinformation contained herein is subject tochange without notice.Microsoft® and Windows® a

NOTE: Single channel and unbalanced dual channel memory configurations will result in inferiorgraphics performance.●The system will operate in single

5. Remove the computer access panel.WARNING! To reduce risk of personal injury from hot surfaces, allow the internal systemcomponents to cool before t

Removing or installing an expansion cardThe computer has three PCI Express x1 expansion slots and one PCI Express x16 expansion slot.NOTE: You can ins

8. Before installing an expansion card, remove the expansion slot cover or the existing expansioncard.NOTE: Before removing an installed expansion car

c. If you are removing a PCI Express x16 card, pull the retention arm on the back of theexpansion socket away from the card and carefully rock the car

11. To install a new expansion card, hold the card just above the expansion socket on the systemboard then move the card toward the rear of the chassi

16. Lock any security devices that were disengaged when the computer access panel was removed.17. Reconfigure the computer, if necessary.Drive positio

Installing and removing drivesWhen installing drives, follow these guidelines:●The primary Serial ATA (SATA) hard drive must be connected to the dark

CAUTION: To prevent loss of work and damage to the computer or drive:If you are inserting or removing a drive, shut down the operating system properly

7. Remove the two black M3 mounting screws from the side of the drive (1) and slide the drive outof the front of the drive bay (2).Installing a 5.25-i

About This BookThis guide provides basic information for upgrading the HP ProDesk Business PC.WARNING! Text set off in this manner indicates that fail

7. If you are installing an optical drive, install one black M3 metric mounting screw in the frontupper screw hole on the right side of the drive.NOTE

9. Connect the power cable (1) and data cable (2) to the rear of the optical drive.10. Connect the opposite end of the data cable to one of the light

6. Disconnect the drive cables from the rear of the drive, or, if you are removing a media cardreader, disconnect the USB cable from the system board

6. Remove the front bezel. If you are installing a device in a bay covered by a bezel blank, removethe bezel blank. See Removing bezel blanks on page

11. Reconnect the power cord and any external devices, then turn on the computer.12. Lock any security devices that were disengaged when the access pa

7. Remove the four 6-32 mounting screws (1) and slide the drive out of the bay (2).Installing a 3.5-inch hard drive1. Remove/disengage any security de

6. You can install a 3.5-inch hard drive or a 2.5-inch hard drive with a 3.5-inch adapter bracketsimilar to the example shown below.●Slide the drive i

7. Slide the drive into the drive bay (1) and install the four 6-32 mounting screws (2) to secure thedrive in place.NOTE: HP has supplied four extra 6

10. Replace the computer access panel.11. Reconnect the power cord and any external devices, then turn on the computer.12. Lock any security devices t

HP business PC security lock1. Fasten the security cable by looping it around a stationary object.2. Insert the cable lock into the cable lock slot on

iv About This Book

3. Slide the security cable through the hole in the cable lock on the rear of the monitor.4. Use the bracket provided in the kit to secure other perip

5. Thread the keyboard and mouse cables through the computer chassis lock.6. Screw the lock to the chassis using the screw provided.Installing a secur

7. Insert the plug end of the security cable into the lock (1) and push the button in (2) to engage thelock. Use the key provided to disengage the loc

A Battery replacementThe battery that comes with the computer provides power to the real-time clock. When replacing thebattery, use a battery equivale

7. Depending on the type of battery holder on the system board, complete the following instructionsto replace the battery.Type 1a. Lift the battery ou

b. Insert the new battery and position the clip back into place.NOTE: After the battery has been replaced, use the following steps to complete this pr

B Electrostatic dischargeA discharge of static electricity from a finger or other conductor may damage system boards or otherstatic-sensitive devices.

C Computer operating guidelines, routinecare and shipping preparationComputer operating guidelines and routine careFollow these guidelines to properly

Optical drive precautionsBe sure to observe the following guidelines while operating or cleaning the optical drive.Operation● Do not move the drive du

IndexAaccess panelremoval 7replacement 8Bbattery replacement 37Ccomputer operating guidelines 41DDIMMs. See memorydrivescable connections 21installati

Table of contents1 Product features ...

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1 Product featuresStandard configuration featuresFeatures may vary depending on the model. For a complete listing of the hardware and softwareinstalle

Front panel componentsDrive configuration may vary by model. Some models have a bezel blank covering one or more drivebays.1 5.25-inch Optical Drive (

Rear panel components1 Power Cord Connector 8 Line-Out Connector for powered audiodevices (green)2 Power Indicator Light 9 Voltage Select Switch3PS