
Rioddas BT638
Score: 69/100
Asus ZenDrive V1M
Score: 81/100Rankings

The ASUS ZenDrive V1M is a slim, USB-C external DVD-RW drive aimed at ultrabook users, featuring M-DISC archival support and an integrated cable for hassle-free portability, while delivering dependable CD/DVD performance.

The Rioddas External CD/DVD Drive is a compact USB 3.0 optical drive that reads and writes all common CD and DVD formats without an external power brick. It offers fast data rates, broad OS support, and a sleek brushed-metal finish, but lacks a warranty and Blu-ray capability.
| Attribute | ![]() | ![]() |
|---|---|---|
625 MB/sbest | 625 MB/sbest | |
8 Xbest | 8 Xbest | |
8 Xbest | 8 Xbest | |
24 Xbest | 24 Xbest | |
24 Xbest | 24 Xbest | |
0 months | 12 monthsbest | |
| ↓ lower better | 2.5 Wbest | 10 W |
| ↓ lower better | 199 gbest | 255 g |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Compatibility(2) | ||
Supported Disc Formats | CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-R, DVD-RW, DVD+R, DVD+RW, DVD+R DL, DVD-R DL, DVD-RAM | DVD+R, DVD‑R, DVD+RW, DVD‑RW, DVD+R DL, DVD‑R DL, CD‑R, CD‑RW |
Operating System Compatibility | Windows, macOS, Linux | Windows, macOS |
General(1) | ||
Warranty Period (months) | 0 months | 12 months |
Build & Design(2) | ||
Weight (g) | 199 g | 255 g |
Form Factor | Portable external | Slim external |
Accessories(1) | ||
Included Accessories | USB drive, User manual, Type-C adapter | Built-in 24 cm USB‑C cable, CyberLink Power2Go 8, CyberLink PowerBackup 2.6, Nero BackItUp, E‑Green |
Power & Energy(2) | ||
Power Source | USB bus powered | Bus-powered |
Power Consumption (W) | 2.5 W | 10 W |
Connectivity(1) | ||
Interface Type | USB 3.0 | USB‑C 3.0 |


Products in the top-left offer the best value (high score, low price).

Professional reviewers praise the USB 3.0 interface, copper-mesh heat-dissipation and brushed-metal chassis, noting the Type-C adapter as a forward-looking feature while calling it a budget-tier solution due to the lack of Blu-ray.
Everyday users appreciate the instant plug-and-play experience, sleek look and reliable eject button, though some report occasional recognition issues and the need to keep the laptop plugged in.

Professional editors commend the ZenDrive V1M for its sleek design, built-in cable storage and rare M-DISC support, positioning it as a thoughtful accessory for modern ultrabooks.
Everyday users appreciate the drive's portability, integrated cable and reliable CD/DVD operation on Windows, though many note the short cable length and occasional macOS compatibility hiccups.
“Plug-and-play works great on Windows 11 and macOS.”

“The drive is lightweight and fits nicely in my laptop bag.”

“Had a few disc-recognition hiccups on an older laptop.”


