The TE Connectivity 7-1734774-3 is a 164-position female PCI Express™ connector from the 1734774 series, built to the standard 0.039" (1.00 mm) pitch that matches every PCIe add-in card edge. The through-hole, staggered solder tails give the connector mechanical hold on the motherboard while keeping the routing lanes open between rows. A board guide on each end steers the card edge into the contact array without stubbing, and the locking ramp snaps over the card's notch to keep it seated under vibration or during handling.
Position Count — 164 vs 98 vs 64
The 1734774 series spans 64, 98, and 164 positions at the same 1.00 mm pitch and same 0.062" (1.57 mm) card thickness. The 164-position variant (7-1734774-3) is the full-length PCIe slot — it carries the widest add-in cards and the most differential pairs. The 98-position variant (9-1734774-5) covers x8 lanes; the 64-position variant (6-1734774-9) covers x4 lanes.
This is the female (receptacle) side of the PCI Express card-edge interface. It mates with a standard PCI Express add-in card that has a 0.062" (1.57 mm) thick edge connector with gold-plated pads on a 1.00 mm pitch. The board guide and locking ramp are integral to the housing — no separate hardware needed for alignment or retention.