Silkland 40Gbps USB 4 for Thunderbolt 4 Cable 4FT, 240W PD3.1, 8K/Dual 4K | USB-IF Certified, Braided USB C Data Cable Compatible for SSD, MacBook, iPhone 17/16, iPad, Dock

This USB4 cable worked perfectly right out of the box. It feels well-made, the connectors fit securely, and it delivers fast data transfer and charging speeds without any issues. I purchased it for a high-speed connection, and it has performed exactly as expected. The cable is flexible without feeling flimsy, and the build quality seems excellent. No connection drops, overheating, or compatibility problems. If you need a reliable USB4/Thunderbolt-compatible cable, this is a great option that offers excellent performance for the price. Highly recommended.

The Silkland USB4 cable is an absolute beast of a cable—fast, reliable, and built to last. I’m using it with a Thunderbolt 4 dock and my MacBook Pro, and it delivers on every promise: 40Gbps data transfer, 240W power delivery, and crisp 8K video output. Transfer speeds are lightning quick—I can move large project files and media in seconds. Video performance is flawless, with smooth 8K and 6K output at 60Hz and no flicker or dropouts. On the charging side, the 240W PD support means my laptop and other high-power devices charge quickly and efficiently. The build quality is excellent—the cable feels durable with reinforced ends, and the connectors fit snugly with no wiggle. At 4FT, it’s the perfect length: long enough for flexible setups without being messy. This is the kind of cable you buy once and trust for all your high-end devices—Thunderbolt docks, external SSDs, monitors, and laptops. If you want pro-grade performance in a sturdy cable, the Silkland USB4 is a fantastic choice.

Hands down the charger everyone in the house goes to. Superfast charging and thick durable cable from a bungee cord like material. Solid connection and not loose.

worked like a charm. no issues speed was great

This cable is a beast. Pushes data and power with no hesitation. It’s very thick and feels tough. I got the 1ft cable I should have got a little longer one it is kinda of stiff. I thinks that’s because this cable feels like you could hold yourself up with it.

This 1.2m cable is one of the longest 40Gbps 240W passive USB-IF certified cables on the market. At the time of writing it is priced at about $20. This cable is USB-IF certified, meaning at has been tested by a USB Forum approved test facility and adheres to all the required performance characteristics of a 40Gbps 240W cable. Far from all cables are qualified this way. This cable also correctly identifies itself as a Thunderbolt cable and will correctly function with all your Thunderbolt 3/4 devices. It will also function properly as a video cable (carries DisplayPort Alt Mode data). As an added bonus, since this is a passive cable (no active circuitry to re-transmit high speed signals) it is expected to be fully compatible with future 80Gbps and 120Gbps USB4 modes! As for construction, the outer material is a cloth braid and has an adequate amount of flexibility for a 40Gbps cable. The cable insertion force is on the lower side but the retention force feels high enough so the connection is secure. Cable Vbus+GND resistance is measured to be about 125mΩ - plenty of margin left from the 150mΩ specification limit for 5A (240W) cables! My issue: the emarker contains some inaccurate information (but this should not affect performance). - The USB Vendor ID field is set to 0x2E99 (11929 decimal) which is Hynetek's VID, but it should be 0x3678 (13944 decimal) for Silkland's VID. - The Cert Stat VDO field is set to 0x23A5 (9125 decimal) which corresponds to the Test ID for the Hynetek HUSB332D emarker chip, which is the emarker used in this cable. It should be set to the XID assigned by the USB-IF to this cable: 0x281C (10268 decimal). - The Product VDO field is blank. This could have allowed Silkland to program a unique identifying value and release number to this cable to track future cables that potentially address the above issues. These issues shouldn't have made it past the certification process or Silkland's engineering department in my opinion. I have contacted Silkland directly, and support claims they will update the cable programming in future batches but they are unable to send me a sample as evidence. Also, note that only the 1m and 1.2m versions of this cable are USB-IF certified.

Got this to provide both power and signal to an external monitor. Works great, no issues. The 2 m length is adequate for most office purposes and the cable itself is pretty durable.

This cable works great (replacing one that I now realize it had a short in it). It arrived promptly and is a great length.

Très bon câble, il fonctionne avec ma station de travail équipée de deux écrans. Une fois connecté, tout fonctionne parfaitement.

Article conforme à la. Je recommande !

Działa jak powinien

He adquirido este cable de Silkland buscando una solución "todo en uno" que no se quede obsoleta a corto plazo, y los resultados confirman que es una pieza de ingeniería excelente. Aquí detallo los puntos clave para quien esté dudando: 1. Construcción y calidad: Lo primero que destaca es su robustez. Tiene un trenzado de nylon de alta densidad que se siente muy resistente al tacto pero lo suficientemente flexible para su longitud (30 cm). Los conectores encajan con firmeza quirúrgica, algo vital en cables de alta velocidad para evitar desconexiones accidentales. El blindaje es notablemente más grueso que en cables estándar, lo que previene interferencias en la señal de vídeo. 2. Rendimiento técnico real: Este cable no es un simple USB-C. Se sitúa en la parte más alta de la jerarquía técnica actual: Velocidad: Certificado para 40 Gbps, lo que lo hace ideal para discos SSD externos de alto rendimiento o tarjetas gráficas externas (eGPU). Potencia: Soporta 240W (PD 3.1). Esto es muy superior a los 60W o 100W habituales; puede cargar desde un smartphone hasta los portátiles más exigentes del mercado sin despeinarse. Vídeo: Maneja resoluciones 8K a 60Hz o 4K a 144Hz con una fluidez total, perfecto para monitores profesionales. 3. ¿Para qué es útil? Debido a su longitud de 30 cm, es el compañero perfecto para: Evitar el desorden de cables al conectar un Docking Station al portátil. Conectar discos externos (PSSD) manteniendo la máxima tasa de transferencia. Uso en el coche con Android Auto o CarPlay, donde un cable largo suele molestar. 4. Situación en la jerarquía: Es importante que el comprador sepa que este cable es compatible con todo (Thunderbolt 3/4, USB4, USB 3.2), pero está un escalón por encima de la mayoría. Mientras que un cable USB-C estándar suele dar 5 o 10 Gbps, este ofrece 40 Gbps. Solo el reciente (y mucho más caro) Thunderbolt 5 lo supera en velocidad, pero para el ecosistema actual de 2026, este es el estándar de oro. Conclusión: Si buscas un cable para cargar el móvil, este es demasiado. Si buscas un cable para centralizar datos, vídeo de alta definición y la máxima potencia de carga en un solo hilo indestructible, es una compra maestra. Muy recomendable.

Works well