CARDS ARE TESTED WORKING.The Adaptec 2940U2 (most commonly found as the AHA-2940U2W or variant OEM models) is a legendary 32-bit PCI Ultra2 SCSI host adapter. Released in the late 1990s, it serves as a "gold standard" interface card primarily used today for restoring legacy workstations, maintaining vintage servers, or running retro gaming builds.
Core Technical Specifications

• Interface Bus: 32-bit standard PCI
• Max Data Transfer Speed: Up to 80 MB/sec
• Device Support: Connects up to 15 SCSI peripherals on a single chain.
• SpeedFlex™ Technology: This critical feature allows you to mix older Single-Ended (SE) legacy devices and newer Ultra2 Low Voltage Differential (LVD) devices on the same chain without bottlenecking the entire bus down to the slowest device's speed.