Type: PCI Express X4 to X16 Internal Ports: 1 - PCI Express x16 Slot Female Specifications: Humidity: 5~95% RH Operating Temperature: 0°C to 60°C (32°F to 140°F) Storage Temperature: 0°C to 60°C (32°F to 140°F) OS Compatibility: Operating System independent Dimensions: 6.22" x 1.26" x 0.67" Weight: 0.88 oz Features: Designed to fit most 1U server chassis' Complete pass-through design supports the latest PCI Express speeds x16 PCI Express female connector accepts x16/x8/x4/x1 cards