Adding Expansion Devices 4-3 Dissipate static electricity before handling any system components(PC Cards, memory modules) by touching a grounded metal object,such as the unpainted bottom plate on the system unit.If possible, use antistatic devices, such as wrist straps and floor mats. Always hold a PC Card or memory module by its edges. Avoidtouching the contacts and components on the card or module. Take care when connecting or disconnecting cables. A damaged cablecan cause a short in the electrical circuit. Prevent damage to the connectors by aligning connector pins beforeyou connect the cable.Misaligned connector pins can cause damage to system components atpower-on. When disconnecting a cable, always pull on the cable connector orstrain-relief loop, not on the cable itself.USB DevicesThe two USB ports on the right side of the system unit allow you toconnect up to 127 USB devices. These devices include hard drives,scanners, printers, digital cameras, CD-ROM drives, modems, keyboards,mouse, speakers, telephones, game devices, and more.USB drivers are constantly being developed and updated for compatibilityand improved performance. Be sure to check that you have the latestdriver for the USB device you are adding, particularly if you are using theMicrosoft Windows 2000 operating system or the Microsoft Windows NToperating system.You can add multiple USB devices in several ways: add two devices, one to each USB port on the right side of the system add multiple devices to each port by “daisy-chaining” each device tothe next device add multiple devices to each port through an optional multiple-porthub(s).
