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Sun

Sun Microsystems 270-1902-04 Differential SCSI Host Adapter Card SBus Module

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SKU:
28217
MPN:
270-1902-04
Condition:
Used
Availability:
Usually ships within 1-2 business days.
Weight:
2.00 LBS
Shipping:
Calculated at Checkout
  • Sun 270-1902-04 Differential SCSI SBus card – front bracket view showing 68-pin SCSI connector and RJ-45 TP port with 'Differential SCSI' label
  • Sun 270-1902-04 Differential SCSI SBus card – PCB top view showing main SCSI controller ICs, AMD chipset, and SBus edge connector
  • Sun 270-1902-04 Differential SCSI card – PCB silkscreen closeup showing part number 270-1902-04 REV 50 printed on board
$40.00
Was: $80.00
Current Stock: 2

Sold Out

Description

Sun Microsystems 270-1902-04 Differential SCSI Host Adapter Card SBus Module

The Sun 270-1902-04 is a Differential SCSI host adapter card designed for the SBus expansion slot found in Sun Microsystems SPARC-based workstations and servers. It provides a high-voltage differential (HVD) SCSI interface for connecting external SCSI storage devices and arrays, alongside a TP (twisted-pair) port on the bracket. The board revision is REV 50, as printed on the PCB silkscreen.

Specifications & What's Included

  • Manufacturer: Sun Microsystems
  • Part Number: 270-1902-04
  • Hardware Revision: REV 50
  • Bus Interface: SBus (Sun workstation expansion bus)
  • SCSI Type: High-Voltage Differential (HVD) SCSI
  • Front Bracket Connectors: 68-pin Differential SCSI connector, RJ-45 TP port
  • Form Factor: SBus plug-in module / card
  • PCB: Green multi-layer board with AMD and secondary SCSI controller ICs visible
  • Included: Card only — no cables or accessories

Applications

The SBus slot was Sun Microsystems' proprietary 32/64-bit expansion bus, used across a wide range of SPARC workstations and servers from the late 1980s through the mid-1990s — including the SparcStation 1, SparcStation 2, SparcStation 10, SparcStation 20, SPARCserver 600MP series, and related systems. Differential SCSI (HVD) was favored in workstation and server environments of this era for its ability to support longer cable runs and better noise immunity compared to single-ended SCSI, making it well suited to connecting external disk enclosures, tape libraries, and RAID arrays. This card is typically sought today by engineers and collectors maintaining legacy Sun SPARC hardware, or by organizations running vintage Sun workstation environments that still require original SBus peripheral cards.

Condition: Used
This Sun Microsystems 270-1902-04 Differential SCSI SBus Host Adapter Card has been inspected and appears to be in good used condition. The PCB is clean with no visible damage, broken traces, or missing components. The bracket and connectors show normal wear consistent with prior installation in a Sun workstation. Please view our photo set and contact us if you have any questions. Please note: We have multiple units in stock — yours may not be the one shown in the photos, however, it will be similar in condition and function.
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Warranty Information

We stand behind every item we sell with a 30-day money-back guarantee. If your item arrives not as described, you may return it within 30 days for a full refund. Please inspect your purchase upon arrival and contact us with any questions.
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Additional Information

Brand:
Sun Microsystems
Model:
270-1902-04
MPN:
270-1902-04
Secondary Model:
270-1902-04 REV 50
Type:
Differential SCSI Host Adapter Card
SKU:
28217
Bus Interface:
SBus
SCSI Type:
Differential SCSI (HVD)
Connector Type:
68-pin SCSI, RJ-45 (TP)
Form Factor:
SBus Module / Card
Hardware Revision:
Rev 50
Compatible With:
Sun SparcStation, Sun SPARCserver, Sun workstations
Condition:
Used – Inspected and Pulled from Working Environment
Seller Notes:
Card only; no cables or accessories included.
Country/Region of Manufacture:
United States
Condition Notes:
Sun 270-1902-04 Differential SCSI SBus card. Inspected and in good used condition. PCB clean, no visible damage. Connectors show normal wear from prior installation.
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Weight:
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MPN:
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Condition:
Used – Pulled from Working Environment
Seller Notes:
Card only; no cables included. Pulled from a working Sun SBus workstation.
Country/Region of Manufacture:
United States
Condition Notes:
Sun 270-1850-01 SBus SCSI Controller Card in good used condition. Pulled from a working Sun workstation environment where it was in active use. PCB is clean with no visible damage. Rev 50.
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Availability:
Usually ships within 1-2 business days.
Weight:
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Brand:
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Model:
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MPN:
0-00398-04
Type:
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SKU:
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Condition:
Used – Pulled from Working Environment
Form Factor:
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Bus Interface:
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Number of Ports:
7 (SCSI, TTYA, TTYB, 2x Ethernet, KYBD, MSE)
Interface Type:
SCSI, RS-232 (TTYA/TTYB), Ethernet x2, PS/2
SCSI Connector:
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Serial Ports:
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Ethernet Ports:
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United States
Seller Notes:
Card only; pulled from a working cPCI system
Condition Notes:
Sun Microsystems cPCI Rear Transition Module 0-00398-04 pulled from a working cPCI system. Inspected and in good used condition. All faceplate ports appear intact. Normal wear.