8ft USB 3.0 Panel Mount Extension Cable, Type A Male to A Female, 5Gbps, #4-40, Black

The CableLeader U3104-XXXX is a USB 3.0 panel mount extension cable rated up to 5 Gbps: a Type A male plug on one end, a flanged 9-pin Type A female receptacle on the other. It exists to solve a mechanical problem rather than an electrical one, taking a SuperSpeed port buried inside a cabinet and fixing it to a surface where equipment can be plugged in from outside.

The male end is a short-type USB 3.0 Type A plug, 50.0 mm overall with a 12.0 mm insertion depth, blue insulator, gold flash contacts. The short body helps when the host port sits in a crowded row of connectors or close to a chassis wall, which is the normal situation inside an equipment enclosure.

The panel end is the part that determines whether this cable fits a build. The receptacle body measures 38.5 mm with a 9.0 mm insertion depth, the flange stands 38.0 mm tall, and its two screw holes are on 28.5 mm centers. Hardware ships in the box: two #4-40 screws at 5.2 x 14 mm and two matching hex nuts. Note that panel cutouts for USB receptacles are not standardized between manufacturers, so machine the opening to these dimensions rather than to another vendor's template.

Inside the 5.8 mm jacket the construction follows the USB 3.0 layout: two shielded 28 AWG SuperSpeed pairs with drain wires, the legacy 28 AWG data pair, and 24 AWG conductors for VBUS and ground, wrapped in aluminum foil and a braided shield. All nine pins run straight through with shield tied to shield, and all materials comply with the RoHS directive.

Length is bounded by physics rather than preference. The USB specification caps a passive SuperSpeed cable at 3 metres, roughly 9.8ft, because signal integrity at 5 Gbps degrades faster than at 480 Mbps. That is why this family stops at 10ft while the USB 2.0 panel-mount family reaches 15ft. Runs beyond that need an active repeater rather than a longer passive assembly.

The black jacket provides a professional appearance and blends into standard office, rack, and enclosure installations.

Compatibility & Ordering Information — U3104-XXXX accepts any USB Type A device on the panel side, including USB 3.0 drives, machine vision cameras and data acquisition hardware, and is backward compatible with USB 2.0 devices at 480 Mbps. It plugs into any USB Type A host port on Windows, macOS, Linux, or an industrial controller. The family ships in 1ft, 3ft, 6ft, 8ft and 10ft, black. Where the panel device is a keyboard, scanner or card reader, the USB 2.0 panel-mount family uses the same 28.5 mm hole centers at lower cost and offers lengths to 15ft.

Product Comparison: USB 3.0 vs USB 2.0 Panel Mount Extension Cable

Both cables perform the same mechanical function: they move a USB port from inside a cabinet to a flanged receptacle on the panel, with mounting hardware supplied and the same 28.5 mm hole spacing. The connector generation is what changes, and it sets bandwidth, cable size and maximum length. The table shows which one your build needs:

Rule of thumb: pick by what will actually be plugged into the panel. Drives and cameras saturate a USB link and justify the 5 Gbps version on this page; keyboards, scanners and service ports do not. Because both families share 28.5 mm hole centers, a mixed-speed enclosure only needs one panel drawing and one drilling operation.

FAQ

What is the difference between a USB 3.0 and a USB 2.0 panel mount cable?

USB 3.0 runs up to 5 Gbps through a 9-pin receptacle with two extra SuperSpeed pairs; USB 2.0 runs 480 Mbps through a 4-pin receptacle. The 3.0 cable is thicker at 5.8 mm and tops out at 10ft, while 2.0 reaches 15ft. Both CableLeader panel families use 28.5 mm hole centers, so the panel cutout and drilling stay the same either way.

Will the flange and #4-40 screws fit my enclosure?

The flange stands 38.0 mm with two screw holes on 28.5 mm centers, and #4-40 screws at 5.2 x 14 mm plus hex nuts are supplied. #4-40 is the common thread for panel-mount USB hardware, so replacement fasteners are easy to source. Panel cutouts are not standardized across manufacturers, so machine the opening from the receptacle dimensions listed in the specifications.

Why is 10ft the longest USB 3.0 panel mount cable, and what does 5 Gbps really deliver?

The USB specification limits a passive SuperSpeed cable to about 3 metres, or 9.8ft, because 5 Gbps signaling degrades over copper far faster than 480 Mbps does. 5 Gbps is the signaling rate; USB 3.0 uses 8b/10b line coding, so roughly 20 percent is overhead and real-world throughput lands near 4 Gbps before protocol costs. Longer runs need an active repeater cable.

How do I install a panel mount USB 3.0 cable?

Machine the panel opening to the receptacle dimensions, pass the receptacle through from the front, align the two flange holes on 28.5 mm centers, and secure with the supplied #4-40 screws and hex nuts. Route the cable inside the cabinet away from power and motor runs, respecting the bend radius of the 5.8 mm jacket, then plug the male end into the host port. No drivers are required.

Which panel mount USB cable is best for an external drive or camera?

The USB 3.0 version on this page, because drives and machine vision cameras are the devices that actually saturate a USB link and benefit from 5 Gbps. Choose the shortest length that reaches the host port, since SuperSpeed signal margin is better on shorter runs. For keyboards, scanners, card readers and service ports, the USB 2.0 panel family is the cost-effective choice.