Switch Position Function
1 Off Reserved
2 Off 8087-2 installed
On NO 8087-2 installed
3 Off Reserved
4 Off Reserved
5&6 Off/Off Mono video card
5&6 On/Off CGA
5&6 On/On EGA
1 drive On On
2 drives Off On
3 drives On Off
4 drives Off Off
Dell System Analyzer
The Dell System Analyzer is not supported in any Turbo system. It
was not ever shipped with a Turbo system. Attempting to use it may cause
Does not support a 101-key keyboard.
NOTE: The LED on the chassis front indicates if the system is in Turbo
mode. There are no beeps or other signals aside from a noticeable
increase in speed.
Are supported on Turbos, not on 286/386s.
3.5-Inch Diskette Drives
The memory sold in this system is 640 KB. It had a 150-ns access chip speed.
There are 2 switch banks located to the right of the memory banks that
would change the amount of base memory on the system. The switches in
both banks would either be "Even OFF/Odd ON" or "Even ON/Odd OFF." If
the even switches were on, the system would have 256 KB of memory; if
all the odd switches were on, it would have 640 KB of memory. (See
Layout for exact position of switches.)
Even if the base memory was changed to 256 KB, the memory chips had to remain in the sockets to complete the circuit.