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| Caution | Only authorized service personnel should upgrade the system. Anyone who wants to upgrade the system themselves should know about the dangers of electrostatic discharge (ESD) and the necessary precautions. Unknowingly damaging the components of the computer will void the warranty. |
Note
Installing a video expansion card will automatically disable onboard video for this motherboard.
Specifications
The PB600 can be upgraded to 2MB video memory using two 256Kx16-70ns SOJ DRAM chips. The following brands and part numbers are recommended:
| Manufacturer | Part No(s). |
| Fujitsu | MB814260-70J-ER |
| Hitachi | HM514260AJ-7T |
| Micron Technology | MT4C16257DJ-7TR |
| Mitsubishi | M5M44260-AJ-7-T10 |
| NEC | UPD42S42560LE-70ITR or UPD42460LE-70ITR |
| Samsung | KM416C256AJ-7T or KM416C256BJ-7T |
| Toshiba | TC514260BJ-7(EL) |
Location
The video memory upgrade is inserted in sockets U27 and U28. Pin 1 is at the rear left corner of the socket. To install the chip, insert it into the socket and push on the chip until it snaps into place.
Chip Insertion
Referrals
To purchase video memory for this system, contact the following supplier:
Coastline Computer Products
| Specifications | Part # | Equivalent PB Part # |
|---|---|---|
| 2 - 256KB x 16, 70ns SOJ DRAM | TC514260BJ-70 | 080378 (No longer available from PB) |