3 of 3
6/27/2007
#26659
724-746-5500
blackbox.com
SW488A: top: front view; bottom: rear view
TECH SPECS
Cable Length (Maximum) —
SCSI interface:
SW488A:
Low-Voltage Differential: 25 m (82 ft.);
Single-Ended: 6 m (19.6 ft.);
SW489A: Differential: 25 m (82 ft.);
Serial interface: 15 m (49.2 ft.)
Compatibility —
SW488A:
Low-Voltage Differential: Ultra160;
Single-Ended: Ultra Wide SCSI;
SW489A: Differential: Ultra Wide SCSI
Compliance — ANSI X3.131, X3T9.2
Speed —
SW488A:
Low-Voltage Differential: 160 MBps;
Single-Ended: 40 MBps;
SW489A:
Differential: 40 MBps;
Serial interface: 9600 bps to 19.2 kbps;
LAN interface: 10 MBps
CE Approval — Yes
Connectors — SCSI: (3) 68-pin VHDCI F;
Serial: (1) DB9 F;
LAN: (1) RJ-45
Indicators — (3) LEDs: (2) for SCSI bus selected; (1) Power
Power — 100–240 VAC, 47–63 Hz, autosensing, external, 20 W
Size — 1.5"H x 9.2"W x 4.1"D (3.8 x 23.4 x 10.4 cm)
Weight — 4 lb. (1.8 kg)
Recognize any of these situations?
• You wait more than 30 minutes to get through
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• The so-called “tech” can’t help you or gives you
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• It’s 9 p.m. and you need help, but your vendor’s
tech support line is closed.
According to a survey by Data Communications
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Don’t waste time and money— call Black Box today.
Why Buy From Black Box? Exceptional Value.
Exceptional Tech Support. Period.
SCSI terminology.
The original SCSI standard—now known as SCSI-1 was
approved in 1986. It supports transfer speeds up to 5 MBps.
SCSI-2 (Fast SCSI) was approved as a standard in 1994.
The normal transfer rate of 10 MBps can go up to 20 MBps,
which is called Fast-Wide SCSI.
SCSI-3 (Ultra SCSI) is found in many high-end systems.
It has transfer rates of 20 MBps (Narrow SCSI-3) or 40 MBps
(Wide SCSI-3).
Technically Speaking
LVD (Low-Voltage Differential).
Low-Voltage Differential (LVD) is a signaling technique to
transfer data at the fastest possible rate with fewer errors.
Technically Speaking
Item
Code
2 x 1 SCSI Switch
Low-Voltage Differential/Single-Ended
SW488A
Differential
SW489A
