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PB410/420 Video Memory Upgrade

Warning Only authorized service personnel should upgrade the system. Anyone who wants to upgrade the system herself/himself should know about the dangers of ESD (Electro-Static Discharge) and the necessary precautions. Unknowingly zapping the components of the computer will void the warranty.

Video Memory Specifications

1. Video memory is upgraded by installing a 256KBx16 70ns or 80ns DRAM ZIP at location U20. The ZIP needs to be ASYMMETRICAL (Write Enabled).
 
2. This DRAM ZIP is not the same chip used for PB430/440/440T upgrades.
 
Pin 1 on the DRAM ZIP is on the "slanted" side of the chip, as shown Component Locations Pin 1 on the ZIP socket on the PB410 motherboard, is located towards the back left side of the motherboard, close to the JVESA connector


The beveled end of the ZIPs install towards the rear of the motherboard. Check to make certain that all the legs on the chip are properly seated in the socket before pushing them in, or the chip will be damaged. Upgrade Table If the Motherboard had a DRAM chip at location (U22) the motherboard has 1MB installed. If there is not a chip at Location (U22), insert a 256KBx16 ZIP at location (U20) to upgrade the video memory to 1MB.
 

Purchase Referrals End users may purchase the DRAM ZIP video memory fromend user Service.