| Note: | Earlier version of the PB550 motherboards have only two SIMM sockets, using socket J5D1 and J6D1. All new releases of the Pentium motherboards [PB540/550/560] have four SIMM sockets, accommodating up to 136 MB of total RAM upgrade. | |
| Standard on motherboard: | 8MB | |
| Maximum on motherboard: | ||
| 2 SIMM Sockets | 72 MB | |
| 4 SIMM Sockets | 136 MB | |
| Maximum addressable: | 4 GB | |
| Uses 1/2/4/8/16/32 MB 72-pin SIMMs, 70ns | ||