Biostar Microtech Int'l Corp. — 3 prefixes (MA-L)

Biostar Microtech International Corp. is a Taiwan-based PC hardware manufacturer, founded in 1986, best known for motherboards, graphics cards, industrial PC boards, and HTPC/barebones systems; it was the first Taiwanese motherboard company to open a mainland-China manufacturing plant (1990) and has traded on the Taiwan Stock Exchange since 1999 (ticker 2399). IEEE's MA-L registry (24-bit OUI) records three separate assignments to the company under two capitalization variants — "BIOSTAR Microtech Int'l Corp." (00:30:67, B8:97:5A) and "Biostar Microtech international corp." (F4:B5:20) — all sharing the same Hsin Tien (Xindian) District, New Taipei City street address, No. 108-2 Min Chuan Road. The oldest-looking record, 00:30:67, still carries the pre-2010 "Taipei Hsien" county naming rather than "New Taipei City," a weak but internally consistent relative-age signal, since Taipei County was renamed New Taipei City in December 2010. No MA-M or MA-S assignments exist under either spelling. The three distinct OUI blocks plausibly correspond to onboard LAN/NIC chipsets across different motherboard and industrial-PC production generations; a light research pass turned up no security advisories or abuse reports specific to BIOSTAR network hardware, only routine consumer forum threads about onboard LAN driver issues.

IEEE assignments

3 MA-L prefixes (00:30:67, B8:97:5A, F4:B5:20) → Biostar Microtech Int'l Corp. [Confirmed] — the IEEE MA-L registry (lines 34521, 27537, 25891)

Registry / block size

MA-L (24-bit OUI) only; no MA-M or MA-S assignment found under either spelling variant [Confirmed] — the IEEE MA-M registry, the IEEE MA-S registry

Registered address

No. 108-2 Min Chuan Road, Hsin Tien (Xindian) District, New Taipei City, Taiwan; oldest record still shows legacy "Taipei Hsien" naming [Confirmed] — the IEEE MA-L registry

Org name spelling variants

"BIOSTAR Microtech Int'l Corp." (all-caps BIOSTAR, 2 prefixes) vs "Biostar Microtech international corp." (mixed case, 1 prefix); same address cluster, same company [Confirmed] — the IEEE MA-L registry

Relative age signal

00:30:67 uses pre-2010 "Taipei Hsien" administrative naming while B8:97:5A and F4:B5:20 use "New Taipei City" (renamed Dec 2010) — a weak ordering signal only, not a date [Likely] — the IEEE MA-L registry

Assignment dates

Unknown / not applicable for all 3 prefixes — IEEE's the IEEE MA-L registry publishes no assignment or registration date field (columns are Registry, Assignment, Organization Name, Organization Address only) [Confirmed] — the IEEE MA-L registry

Company identity

Taiwanese PC hardware manufacturer, founded 1986; motherboards, GPUs, industrial PC boards, HTPC/barebones systems; first Taiwanese motherboard maker to open a China manufacturing plant (1990); Taiwan Stock Exchange listed since 1999 (ticker 2399)

[Confirmed] — https://en.wikipedia.org/wiki/Biostar, https://www.biostar-usa.com/app/en-us/about/investors.php

Company status

active [Likely] — https://finance.yahoo.com/quote/2399.TW/profile/

Device / usage context

onboard LAN/NIC chipsets on motherboards and industrial PC boards is the plausible use, inferred from the company's product line — not confirmed per-prefix by IEEE [Likely] — https://en.wikipedia.org/wiki/Biostar

Security context

no CVEs or advisories found for BIOSTAR onboard LAN/network hardware in a light single-pass search; only routine consumer forum threads about onboard LAN driver/BIOS issues turned up, which is an absence-of-findings signal, not a confirmed-clean verdict [Unknown] — https://forums.anandtech.com/threads/biostar-mobo-onboard-lan-problem.1381592/, https://forums.tomshardware.com/threads/biostar-mcp6p-m2-onboard-lan-problem.443593/

IANA reference

not applicable — OUI/MAC registry entries have no IANA Reference column; left blank rather than fabricated [Confirmed]

Company substance verdict

SUBSTANTIVE — identifiable, decades-old, publicly traded company with clear product/device context (motherboards, GPUs, industrial PCs with onboard networking) plus 3 distinct OUI assignments spanning two spelling eras, independently sufficient beyond a bare single-OUI registration [Confirmed]