NCD Explora 450 Series, Инструкция по установке, Страница: 29 / 62

Installing Additional Memory
Installing Optional Equipment in the Space-Saver Base 5-3
Caution
If you do not feel confident performing the following procedure on your NC, send
the NC to a qualified service center.
Installing additional memory is a four-step procedure described in detail on
the following pages:
1. Disassemble the
NC
. See “Disassembling the Space-Saver Base” on page
5-4.
2. Install the
SIMM
(s). See “Installing SIMMs” on page 5-5.
3. Reassemble the
NC
. See “Reassembling the Space-Saver Base” on page 5-
8.
4. Test the memory after your
NC
is up and running. See “Testing Memory”
on page 5-10.
The only tool you need is a small flat-blade screwdriver.
Table 5-2 SIMM Specifications
Speed Fast-page mode (Explora 400) or EDO (Explora 450). 60
nanoseconds (ns) or faster. (Lower ns ratings are faster.) 72-pin.
Profile Low profile (maximum 1.1 inches (28 mm) tall). Use tin-plated
SIMM contacts.
Thickness Board thickness of 0.047 inches to 0.054 inches (0.050 inches
(1.27 mm) nominal). Installing SIMMs that are out of
specifications might damage the SIMM slot or cause the NC to
behave erratically.
Size 32-bits wide.
1 MB (256Kx32 SIMM)
2 MB (512Kx32 SIMM)
4 MB (1Mx32 SIMM)
8 MB (2Mx32 SIMM)
16 MB (4Mx32 SIMM)
32 MB (8Mx32 SIMM)