USB Type C
USB Type C
The Type-C plug connects to both hosts and devices, replacing various Type-B and Type-A connectors and cables with a standard meant to be future-proof. The 24-pin double-sided connector provides four power/ground pairs, two differential pairs for USB 2.0 data bus (though only one pair is implemented in a Type-C cable), four pairs for high-speed data bus, two “sideband use” pins, and two configuration pins for cable orientation detection, dedicated biphase mark code (BMC) configuration data channel, and VCONN +5 V power for active cables. Type-A and Type-B adaptors/cables will be required for older devices in order to plug into Type-C hosts; adaptors/cables with a Type-C receptacle are not allowed.
Full-featured USB Type-C cables are active, electronically marked cables that contain a chip with an ID function based on the configuration data channel and vendor-defined messages (VDMs) from the USB Power Delivery 2.0 specification. USB Type-C devices also support power currents of 1.5 A and 3.0 A over the 5 V power bus in addition to baseline 900 mA; devices can either negotiate increased USB current through the configuration line, or they can support the full Power Delivery specification using both BMC-coded configuration line and legacy BFSK-coded VBUS line.
Cable wiring
| Full-featured USB 3.1 Type-C cable wiring | |||||||
| Type-C plug 1 | Type-C cable | Type-C plug 2 | |||||
| Pin | Name | Wire color | Name | Description | Pin | Name | |
| Shell | Shield | Braid | Shield | Cable external braid | Shell | Shield | |
| A1, B1, A12, B12 | GND | Tin-plated | GND_PWRrt1 GND_PWRrt2 | Ground for power return | A1, B1, A12, B12 | GND | |
| A4, B4, A9, B9 | VBUS | Red | PWR_VBUS1 PWR_VBUS2 | VBUS power | A4, B4, A9, B9 | VBUS | |
| B5 | VCONN | Yellow | PWR_VCONN | VCONN power | B5 | VCONN | |
| A5 | CC | Blue | CC | Configuration channel | A5 | CC | |
| A6 | Dp1 | White | UTP_Dp | Unshielded twisted pair, positive | A6 | Dp1 | |
| A7 | Dn1 | Green | UTP_Dn | Unshielded twisted pair, negative | A7 | Dn1 | |
| A8 | SBU1 | Red | SBU_A | Sideband use A | B8 | SBU2 | |
| B8 | SBU2 | Black | SBU_B | Sideband use B | A8 | SBU1 | |
| A2 | SSTXp1 | Yellow * | SDPp1 | Shielded differential pair #1, positive | B11 | SSRXp1 | |
| A3 | SSTXn1 | Brown * | SDPn1 | Shielded differential pair #1, negative | B10 | SSRXn1 | |
| B11 | SSRXp1 | Green * | SDPp2 | Shielded differential pair #2, positive | A2 | SSTXp1 | |
| B10 | SSRXn1 | Orange * | SDPn2 | Shielded differential pair #2, negative | A3 | SSTXn1 | |
| B2 | SSTXp2 | White * | SDPp3 | Shielded differential pair #3, positive | A11 | SSRXp2 | |
| B3 | SSTXn2 | Black * | SDPn3 | Shielded differential pair #3, negative | A10 | SSRXn2 | |
| A11 | SSRXp2 | Red * | SDPp4 | Shielded differential pair #4, positive | B2 | SSTXp2 | |
| A10 | SSRXn2 | Blue * | SDPn4 | Shielded differential pair #4, negative | B3 | SSTXn2 | |
| * Wire colours for differential pairs are not mandated | |||||||
Hardware and OS support
OS support
Windows 10 is supporting USB 3.1 and USB Type-C. OS X is supporting USB 3.1 and USB Type-C. Android Marshmallow will support USB Type-C.
Hardware support
Netbooks, tablets, smartphones
Among the first devices to accommodate a USB Type-C cable are the Nokia N1 tablet, Apple’s 2015 MacBook (which has only a single first-generation USB 3.1 port), and Google’s second Chromebook Pixel. The HP Pavilion x2 10 detachable a 2 in 1 Hybrid also supports USB Type-C . The first smartphone that accommodates a USB Type-C cable is from a Chinese company LeTV. Recently, OnePlus 2, successor of OnePlus One mobile, announced USB Type-C in its specifications.
Storage LaCie announced a mobile drive. SanDisk launched a line of SSDs supporting 10 Gbit/s USB 3.1 Type-C
Types of Connectors
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