Specifications

Table 4–1 (Cont.) Field Replaceable Units
Part Number FRU Order Number
Options
International 102-key keyboard PCXAL-xx
19-32971-01 64 KB cache card (for DX25, DX33) PSWXM-AA
19-32971-02 128 KB cache card (for DX25, DX33) PSWXM-AB
512 KB video RAM kit PSWXM-BA
4 MB SIMM kit (2 x 2 MB, 80 ns) PS2XM-AA
8 MB SIMM kit (2 x 4 MB, 80 ns) PS2XM-AB
16 MB SIMM kit (2 x 8 MB, 80 ns) PS2XM-AC
32 MB SIMM kit (2 x 16 MB, 70 ns) PS2XM-AD
Memory expansion module PS2XM-AE
Terminal multiplexer kit PC4XD-DA
29-28309-01 8-port terminal concentrator PC4XD-DB
EtherWORKS Turbo DE200-AC
30-37789-01 Adaptec 1520 SCSI adapter PSXAZ-AA
29-29052-01 Adaptec 1540B 16-bit SCSI adapter PSXAZ-CA
30-37790-01 Adaptec 1740A SCSI adapter PSXAZ-BA
30-24962-01 RX33 5.25-inch diskette drive PS20R-FA
105 MB IDE 3.5-inch hard disk drive PC4XR-EB
RZ24-S 209 MB SCSI 3.5-inch hard disk drive PS20R-AA
RZ25-S 426 MB SCSI 3.5-inch hard disk drive PS20R-BA
RZ35-E 852 MB SCSI 3.5-inch hard disk drive PS20R-GA
RZ56-E 665 MB SCSI 5.25-inch hard disk drive PS20R-CA
RZ57-E 1.0 GB SCSI 5.25-inch hard disk drive PS20R-DA
RZ58-E 1.38 GB SCSI 5.25-inch hard disk drive PS20R-HA
TKZ08-AA TKZ08 2.2 GB SCSI helical tape drive
TZK10-AA 320/525 MB SCSI QIC tape drive PS20R-EA
30-34761-01 16-inch color monitor (1280 x 1024, multisync) VRC16-DA
Miscellaneous
70-28293-01 Wire assembly, front panel
70-28294-01 Wire assembly, DC switch
12-22355-12 DC switch, DPST (on-none-off)
1
12-23609-11 4.5-inch fan, tube axial
12-17119-01 Cabinet key
29-26246-01 Field engineer ESD kit
12-36175-01 Disposable ESD strap
1
The DC switch (12-22355-12) is part of the DC switch wire assembly (70-28294-01), but can be
ordered and replaced separately. The switch is plastic and is connected with push-on terminals.
(continued on next page)
4–2 FRU Removal and Replacement