Alpine KCU-315UH
USB/HDMI extension cable for connecting smartphones to select Alpine receivers
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Alpine KCU-315UH 15' USB/HDMI Extension Cable
Product overview:
The Alpine KCU-315UH is a heavy-duty 15-foot extension cable designed to bring your Alpine receiver’s rear-panel connectivity to a much more accessible location. By extending both USB and HDMI ports, it allows you to easily connect smartphones, flash drives, or portable media players from the comfort of your seat rather than fishing through the glovebox or reaching behind the dash. It is an essential accessory for vehicles with custom-fit Alpine Restyle systems where rear-panel access is restricted.
Features
Seamless Connectivity
The KCU-315UH acts as a high-speed bridge between your media and your head unit. On one end, it features male USB Type-A and HDMI connectors that plug directly into your Alpine receiver. The other end terminates in female USB and HDMI ports, providing a perfect docking station for MHL-compatible Android smartphones, portable Blu-ray players, or USB memory devices. The USB connection is fully compatible with Apple CarPlay® and Android Auto™, ensuring your primary apps remain functional and fast.
Safety & Convenience
Eliminate the clutter of dangling wires in your cockpit. The KCU-315UH is designed for flush-mount installation, allowing you to cut a small opening in your dash or center console for a factory-integrated look. It features integrated tabs to snap securely into place, and the included flip-up dust cover protects the terminals from debris and spills when not in use. This "front-of-vehicle" access ensures you spend less time fumbling with cables and more time focused on the road.
Enhanced Audio & Ambiance
While primarily a utility cable, the KCU-315UH enhances your vehicle's ambiance by allowing for a much cleaner, "stealth" installation of high-tech media sources. Because it supports HDMI transmission, it enables the playback of high-definition video content on your Alpine screen with zero signal degradation. The use of high-quality copper conductors and robust shielding ensures that your audio remains crisp and your video remains sharp, even across the full 15-foot extension.
Fine Tune Your Sound
Optimization is built into the cable's physical design. With a 15-foot length, it offers enough slack to be routed from the dashboard all the way to the rear passenger seats or a center armrest, giving you total flexibility in how you "fine-tune" your cabin's layout. The slim connector design on the receiver-side ensures it can fit through tight dashboard channels, while the rugged outer casing protects the internal wiring from the heat and vibration common in automotive environments.
Full Specs:
| Category | Specification |
| General | |
| Color | Black |
| Cable Length | 15 Feet (4.5 Meters) |
| Connector Type A | Male USB Type-A / Male HDMI |
| Connector Type B | Female USB Type-A / Female HDMI |
| Smartphone Support | Fully Compatible with CarPlay & Android Auto |
| Mounting Type | Flush Mount with Integrated Tabs |
| Protection | Flip-Up Dust Cover Included |
| Video Support | HDMI / MHL Compatible |
| Dimensions | |
| Cutout Required | 1.0625" (W) x 1.0" (H) x 1.8125" (D) |
| Outer Faceplate | 1.625" (W) x 1.6875" (H) |
| Warranty Information | |
| Parts/Labor Warranty | 1 Year Limited |
What Others Are Saying
Eddie was great - SDCS installed a new head unit in my 2019 4Runner. He was honest in his opinions regarding the options I was considering. Pricing was also good - he was able to reuse some of my existing installation kit so I saved a bit of $$.Installation was clean and fast and he took the time to walk through the features before I left. Highly recommend!!
I had a great time at this shop! The staff really knows their stuff and took the time to explain the different options without pressure. Installation was quick, clean and professional. Everything looks factory and sounds amazing. The prices were fair and customer service was above and beyond. I highly recommend this place if you're looking for quality car audio and excellent service.
Those guys are really professional! I had a new Alpine floating head unit installed in my 2008 Mercedes, and it feels like a brand-new car. The installation was super clean. At first, the sound wasn’t the same as the factory stereo, but Kevin tuned it to be just as good—if not better—without adding any new amps. They even used my factory GPS antenna so I don’t have extra wires hanging out. On top of that, they matched the online price. Big thanks to Kevin and Eddie—highly recommended!
Kevin was awesome, he took his time and explained everything to me. I went in initially for a dash cam install and then decided to get a sub and amp installed as well. Both turned out great and will be returning if I need more work done.
Came In not knowing what to expect when suddenly my stereo stopped working. Spoke with Kevin in the front and after a VERY fast diagnosing they discovered my wiring was incorrect. After only about 45 minutes total being in the store I was on my way to the beach with a working stereo again! Thank you so much SDCARSTEREO
Highly recommend Kevin and the team at San Diego Car Stereo for any issues with aftermarket stereos. I bought a car with an aftermarket stereo and AC unit that wasn’t working properly—specifically, the heat wasn’t functioning due to an improper setup. I had several people look at it with no luck, and even the dealership basically refused to help because it was an aftermarket install. I came to Kevin and his team over the holidays feeling pretty defeated, but he was confident he could get the heat working before I headed back to a Colorado winter. Sure enough, he got it done.
FAQ
Do products purchased from San Diego Car Stereo come with a warranty?
Yes, all products come with a 1-year manufacturer warranty unless otherwise stated. This covers any defects excluding physical damage.
Are these products brand new?
Yes, every product we sell is 100% brand new, unused, and comes in original manufacturer packaging unless clearly marked otherwise.
Do you offer installation services?
Yes, we offer professional installation services at both of our San Diego Car Stereo locations. Our expert technicians have over 50 years of combined experience to install all of your car, marine, or offroad audio needs. Stop by or give us a call to schedule an appointment to get a quote in person.