Clevo Co. (藍天電腦; founded 1983 as Nan Tan Computer, NTC) is a Taiwanese ODM/OEM laptop manufacturer that designs and builds barebone notebook chassis ("barebooks") sold to value-added resellers who configure and rebrand them. IEEE lists three MA-L (24-bit) OUI assignments for "CLEVO CO.": D4-93-90 and 80-FA-5B carry the newer New Taipei City registry address (No. 129, Xingde Road, TW 241), while the older 00-90-F5 block lists the legacy Taipei Hsien address (35, Wu-Gon 6th Road). A MAC bearing a Clevo OUI therefore identifies a notebook or barebone laptop — most often sold under a downstream brand (Sager, System76, Schenker, BTO, XNB) rather than the Clevo label — not network infrastructure. Two security incidents make this vendor materially worth tracking: the BRLY-2025-002 Intel Boot Guard private-key exposure (published 2025-03-26), where signing keys were found embedded in Clevo firmware update packages, creating a downstream UEFI-firmware supply-chain risk for OEM customers; and a June 2024 RansomHub extortion claim alleging ~200 GB exfiltrated, which Clevo did not publicly confirm. No IEEE assignment date exists for any of these blocks; IEEE publishes none.
- IEEE assignment
- 3 MA-L prefixes → CLEVO CO., Taiwan (TW) [Confirmed] — IEEE oui.csv (R1-registry)
- Registry / block size
- MA-L (24-bit OUI) [Confirmed] — IEEE oui.csv. No MA-M (mam.csv) or MA-S (oui36.csv) entries found [Confirmed] — R1-registry
- Verified prefixes (all MA-L, CLEVO CO.)
- D4-93-90, 80-FA-5B (No. 129, Xingde Road, New Taipei City, TW 241); 00-90-F5 (35, Wu-Gon 6th Road, Taipei Hsien — legacy address) [Confirmed] — IEEE oui.csv
- HQ / country
- 35F., No. 555, Siyuan Rd., Xinzhuang Dist., New Taipei City 242034, Taiwan (R.O.C.) [Confirmed] — clevo.com.tw contact page
- Company status
- active [Confirmed] — https://www.clevo.com.tw/
- Founding / history
- founded 1983 as Nan Tan Computer (NTC); laptop business 1987, production 1990; listed on Taiwan Stock Exchange 1997; manufacturing expanded to Kunshan, China 2002 [Confirmed] — en.wikipedia.org/wiki/Clevo
- Device types
- laptops / notebook computers sold as barebone chassis (barebooks) to OEM/ODM resellers; also all-in-one PCs and rugged computers; some configurations ship without Wi-Fi [Confirmed] — Wikipedia, clevo.com.tw, laptopwithlinux.com
- OEM customers / related vendors
- System76, Sager, Schenker, BTO, XNB [Confirmed]; Gigabyte and XPG implicated via shared firmware images [Likely] — Wikipedia, laptopwithlinux.com, cybersecuritynews.com
- OUI registration date
- Unknown — IEEE publishes no MAC/OUI assignment dates; any third-party "date registered" is a database artifact, not asserted here [Unknown] — IEEE oui.csv
- Security note (Boot Guard)
- BRLY-2025-002, published 2025-03-26 — Intel Boot Guard private keys embedded in Clevo firmware update packages (BootGuardKey.exe + .pem); affects 15 firmware images across 10 devices (Gigabyte G6X 9KG confirmed); enables crafting verified-but-unauthorized UEFI firmware; CERT/CC closed without full resolution [Confirmed] — cybersecuritynews.com, gbhackers.com
- Security note (ransomware)
- RansomHub listed Clevo June 2024, claiming ~200 GB exfiltrated (schematics, Micron-related docs) via phishing; Clevo did not publicly confirm [Confirmed claim, unconfirmed by vendor] — cyberinsider.com, cybernews.com
- Analyst note
- a Clevo OUI on a network identifies a notebook/barebone laptop, usually rebranded by a downstream OEM; the BRLY-2025-002 key leak means such devices carry a known firmware-signing supply-chain risk even when not labeled "Clevo" at retail.