Internal power cable THERMALTAKE AC-058-CO1OTN-C1, PCI-E x16 (Gen4) male to female, 0.3 m, black

The Thermaltake AC-058-CO1OTN-C1 is a 0.3 m internal PCI-E x16 (Gen 4.0) extender cable designed to provide high-speed graphic data transmission and reliable power delivery for modern GPUs and PCI Express devices. The ribbon-style flat cable supports PCIe 2.0, 3.0 and 4.0 signaling with bandwidth capability up to 16 Gbps, and its compact, flexible design is intended for use in tight-case layouts where cable routing and airflow optimization matter.

Advantages

The cable combines an ultra-high-speed transmission path with a foldable, highly routable flat format that permits tight bends without degrading signal integrity. Conductive polymer EMI shielding across the flat cable layers reduces electromagnetic interference while keeping the cable lightweight. An integrated cable protector reinforces connector strain points to prevent damage when the cable is folded or twisted, and the product has been high-frequency tested to verify signal integrity and consistent performance comparable to in-slot GPU connections. The cable is compatible with both AMD and Intel motherboards and is finished in black to match common system builds.

Suitable for

• Relocating a PCI-E x16 graphics card inside a compact or custom PC case
• Vertical GPU mounting where space constraints require a short, flexible extender
• Systems using PCIe Gen 4.0 graphics cards that need a short internal extender (0.3 m)
• Builds that require improved cable routing and airflow optimization

Key specifications

• Cable length: 0.3 m
• Connector 1: PCI-E x16 (Gen 4.0)
• Connector 2: PCI-E x16 (Gen 4.0)
• Supported standards: PCI Express 2.0 / 3.0 / 4.0
• Maximum data bandwidth (per manufacturer): up to 16 Gbps
• Colour: Black

How to use

Connect one end of the extender to the motherboard PCI-E x16 slot and the other end to the graphics card PCI-E x16 connector, ensuring both connectors are fully seated. Route the flat ribbon cable through the case in the desired orientation, using folds as needed to fit tight spaces while avoiding sharp kinks. Use the integrated cable protector at the connector area to reduce strain when bending or twisting the cable. After installation, verify the GPU is recognized by the system and perform a quick functional check to confirm signal and power delivery.

Recommendations

For best results, keep the 0.3 m extender as short and straight as possible, avoid extreme sharp bends, and ensure the connectors are clean and securely attached. Use in compatible PCIe Gen 4.0 configurations for optimal bandwidth; the cable remains backward compatible with PCIe 3.0 and 2.0 devices.