HP QX310 Removable Carrier only (8GQ91AA) is a removable storage drive carrier for use with compatible HP workstation configurations. It provides a caddy for a removable hard drive, making it a practical option when adding or replacing the carrier in a supported system.
This is the carrier only variant. HP distinguishes it from the QX310 NVMe frame/carrier supplied with a PCIe card, so this item should be understood as the carrier rather than that card-equipped option.
The listed compatible workstations are HP Z2 G4, Z4 G4, Z6 G4 and Z8 G4. HP QuickSpecs also list the part for the Z8 G4 workstation.