IBM B50 - Manual (Page 26)

System Features
Bus Architecture
Two 32-bit PCI adapter slots are available:
Slot 2, primary (full size)
Slot 1, secondary (half size)
Microprocessor
PowerPC 604e 375 MHz with 1MB parity synchronous L2 cache
Memory
128MB-1GB SDRAM
4 memory module sockets for 128MB or 256MB dual inline memory modules
with ECC SDRAM EDO (extended data out)
Diskette Drive
Standard: 3.5-inch, 1.44MB
Drives
Hard Disk Drives
9.1GB and 18GB Ultra SCSI drives
Maximum supported: 2 internal
CD-ROM drive
32x speed 5.25-inch, with sliding tray (no caddy required)
Other Drives
Drive bays can accommodate 3.5-inch disk drives or CD-ROM drives.
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