IBM RT PC Options Installation page 88

Diskette Options
You can install either an mM Personal Computer AT High Capacity
Diskette Drive (1.2M-byte memory) or an IBM Personal Computer AT
Dual-Sided Diskette Drive (360K-byte memory) in position B. See the
system unit diagram for a picture of the correct position.
L--========I..\
LED
9E?~~ ~*+--AsteriSk t---;9::~a
=]
~
~--~~---------
360K-Byte Drive
1.2 M-Byte Drive
Refer to "Handling Static-Sensitive Drives" on page 2-4 before beginning
this section.
Section 2. Removing and Installing Drives in mM 6150
2-47