Description
Mylex DAC960LB 550069-D EISA SCSI RAID Controller Card FAB D
The Mylex DAC960LB is an EISA-bus SCSI RAID controller card built around the Intel i960 RISC processor, designed to manage disk array configurations on EISA-slot servers and workstations. Part number 550069-D, this is the FAB D board revision of the DAC960LB. The DAC960 series was Mylex's flagship line of hardware RAID controllers widely deployed in early-to-mid 1990s enterprise servers, offloading RAID processing from the host CPU.
Specifications & What's Included
- Manufacturer: Mylex
- Model: DAC960LB
- Part Number: 550069-D
- Board Revision: FAB D
- Bus Interface: EISA (full-length card)
- Host Processor: Intel i960 RISC controller
- SCSI Channels: Multiple internal SCSI headers visible on board (50-pin style)
- External Connector: 1× HD50 (high-density 50-pin) external SCSI port on bracket
- Onboard ICs: Dual QLogic SCSI controller ICs visible on component side
- Onboard Memory: Multiple RAM ICs populated (National Semiconductor M14C1024D noted in photos)
- Form Factor: Full-length EISA expansion card
- Card only — no SCSI cables or accessories included
Applications
The Mylex DAC960 series was a dominant hardware RAID controller platform throughout the early-to-mid 1990s, when EISA-bus servers from vendors such as Compaq, HP, IBM, and AST were the backbone of corporate data centers. The DAC960LB connected to SCSI disk arrays and presented them to the host operating system as logical drives, supporting RAID levels 0, 1, and 5 without burdening the server's main CPU. These cards were commonly used with NetWare, OS/2, and early Windows NT server deployments. Today the DAC960LB is primarily sought by collectors restoring vintage EISA-era servers and by administrators maintaining legacy systems that still depend on original hardware RAID controllers. Its full-length EISA form factor means it requires a full-length EISA slot, which limits compatible chassis to EISA tower and rackmount servers of that generation.
This Mylex DAC960LB EISA SCSI RAID Controller (P/N 550069-D) was pulled from a working server environment where it had been in active use. The card has been visually inspected and shows the normal light wear you'd expect on used server hardware from this era — no cracked traces, broken connectors, or missing components are visible. The gold EISA edge connector fingers and the HD50 external SCSI port both appear clean and intact. Please review all photos carefully and contact us with any questions before purchasing.
Warranty Information
Additional Information
Brand: |
Mylex |
Model: |
DAC960LB |
MPN: |
550069-D |
Secondary Model: |
550069-D |
Type: |
EISA SCSI RAID Controller Card |
SKU: |
34168 |
Interface: |
EISA |
SCSI Interface: |
SCSI |
Bus Type: |
EISA |
Controller Processor: |
Intel i960 |
Hardware Revision: |
FAB D |
Form Factor: |
Full-Length EISA Card |
External Connector: |
1x HD50 (SCSI external port) |
Country/Region of Manufacture: |
United States |
Seller Notes: |
Card only; no cables or accessories included. |
Compatible With: |
EISA-bus servers and workstations supporting DAC960 RAID |
Condition Notes: |
This Mylex DAC960LB 550069-D EISA SCSI RAID controller was pulled from a working server environment. Visually inspected; EISA edge connector and HD50 port appear clean. Normal light wear. Please contact us with any questions. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |