AT&T 3B2/300 Technical Reference Manual page 53

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Domestic 3B2/400 Computer Cabinet (ED-4C631-30)
N:ajor Assemblies
Figure 2-5 shows a typical domestic 3B2/400 computer. The major assemblies include the
following:
• Power Supply Unit (TRW #095-10035-XXl) set for 115 volt AC operation
• One Floppy Disk Drive, KS-23114,L4
• One or two Hard Disk Drives:
o 30-megabyte, KS-23054,Ll
o 72-megabyte, KS-23054,L2.
• One 23-megabyte Cartridge Tape Drive, KS-23165,Ll
• System Board ED-4C637-30,G2 (without MAU) or ED-4C637-30,G5 (with MAU)
• CMl 94B Backplane and card cage
• Memory card(s)
• DUART Connector-2 Interface, ED-4C631-35,G2
• Backup battery.
EQUIPMENT DESCRIPTION 2-29