6-Piece Workstation PCI Slot Guide With Cooling Fan For HP Z4 G4 (907239-001 / 1XM33AA) - Open Box

This is a set of six PCI slot guides that come with a built-in cooling fan, pulled from an HP Z4 G4 workstation.

They're an open-box item, meaning they're in excellent, new condition but might not be in the original sealed packaging.

The part numbers cross to 907239-001, 927568-001, and 1XM33AA.

If you're building or upgrading an HP workstation and need that extra airflow over your PCIe cards, this is a cheap and easy solution.