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The B21 DVD drive with USB HUB is designed for laptops and desktop computers that need external optical-disc access together with additional connectivity. By combining optical drive support, USB HUB functionality, and SD card reading in one compact solution, B21 helps reduce the need for multiple separate computer accessories.
The product uses a USB 3.0 Type-A interface and supports a maximum specified data transmission rate of up to 5Gbps while remaining backward compatible with USB 2.0. It is suitable for various SATA DVD RW, Blu-ray BD, and Combo optical drives, making it a practical option for computer accessory distributors, system integrators, repair channels, and commercial IT suppliers.
Specification | Details |
Product Model | B21 |
Applicable Devices | Laptop, Desktop Computer |
Main Interface | USB 3.0 Type-A |
USB Compatibility | USB 3.0 / USB 2.0 |
Maximum Data Rate | Up to 5Gbps |
HUB Function | Supported |
Card Reading | SD Card |
Chipset Solution | INIC1618 |
Optical Drive Application | SATA DVD RW / Blu-ray BD / Combo |
Supported Systems | Windows 2K/XP/2003/Vista/7/8/8.1/10, Linux, Mac 10 OS |
Package Size | 194 × 154 × 27mm |
Package Contents | Manual, B21 Kit |
Product size
B21 supports USB 3.0 transmission up to 5Gbps, providing a high-bandwidth connection for compatible data-transfer applications. Backward compatibility with USB 2.0 also allows the product to serve computers equipped with earlier USB interfaces.
For distributors and B2B buyers, this compatibility can simplify product selection because one B21 solution can address customers using different generations of USB-equipped laptops and desktop computers.
In addition to supporting an external optical drive, the B21 provides a USB HUB function and SD card reading capability. This multifunction configuration is especially useful for laptops and compact desktop systems where available connectivity may be limited.
Instead of adding separate accessories for optical media, USB expansion, and SD card access, users can integrate these functions into one workstation solution. This gives resellers a broader application story for office, education, computer repair, data access, and general desktop expansion markets.
The B21 is designed for use with various brands of SATA DVD RW, Blu-ray BD, and Combo drives. This allows system builders and computer accessory suppliers to match the B21 kit with different compatible optical drive configurations according to project requirements.
The product adopts the INIC1618 solution and supports a power-saving sleep mode. Actual optical disc recognition time can vary depending on the optical drive mechanism and the USB power available from the host computer.
Work Parameter | Minimum | Normal | Maximum | Unit |
Working Voltage | 4.8 | 5 | 5.5 | VDC |
Working Current | 1000 | 1200 | 1800 | mA |
Static Power Consumption | 70 | 150 | 200 | mA |
Working Frequency | — | 50/60 | — | Hz |
Best Working Temperature | +5 | — | +30 | °C |
The following schematic provides a visual reference for the B21 connection layout and product configuration.
Step 1 – Connect the External Optical Drive
Connect the B21 external optical drive to the computer's USB port.
Step 2 – Wait for the Computer to Detect the Drive
According to the supplied product instructions, the optical drive should normally be recognized after approximately 5–8 seconds, after which the corresponding optical drive letter appears on the computer.
Step 3 – Insert and Read the Disc
Press the eject switch to open the tray, place the appropriate disc into the drive, and close the tray for reading. Disc recognition time can depend on the power requirements of the optical drive mechanism and the USB power supplied by the computer.
The product is tested using DVD and CD disc sources to verify normal optical drive operation. Testing checks whether discs can be read and played normally without abnormal conditions such as disc jamming.
The reference product speed measurement platform includes Windows 8.1 Special Edition 32-bit, an AMD A10-5800 processor with 4GB memory, a Gigabyte F2A78M USB 3.0 motherboard, and Nero CD-DVD Speed test software.
A: Test the optical drive read and write:
B: HUB hub USB3.0 port test 120G high -speed hard disk speed:
C: SD card read card 16G test:
D: HUB hub USB2.0 port test 120G high -speed hard disk speed:
The B21 package measures 194 × 154 × 27mm and includes a manual and B21 kit.
During transportation, the product should be packaged securely in a box and protected from severe vibration, impact, squeezing, direct sunlight, and rain.
For storage, keep the product in a clean, dry, and ventilated room with an ambient temperature from -20°C to 35°C and relative humidity not exceeding 75%. Avoid contact with corrosive substances and keep the product away from fire and heat sources.
The B21 USB 3.0 DVD drive solution combines optical drive connectivity, USB HUB expansion, SD card access, USB 3.0 transmission, and multi-system compatibility in one product. It is well suited to computer accessory wholesalers, electronics distributors, system integrators, office equipment suppliers, and project-based procurement.
For wholesale orders, send us your required quantity, target market, optical drive configuration, packaging requirements, and delivery destination. Contact us to request B21 bulk pricing, OEM/ODM details, and a customized quotation for your project.
