This is from 2002, a useful definition of "white box mfrs":
"White box manufacturers generally assemble, sell, and ship PCs without a well-known brand name, usually to small businesses, educational, or government customers served by the small IT service providers Dell is targeting.
Most white box manufacturers focus on a specific region, but together they form the largest block of PC shipment market share, as tracked by IDC. In fact, IDC had to revise its estimates of the worldwide PC market earlier this year because it had undercounted shipments from white-box manufacturers.
Examples of large well-known white-box manufacturers include Brazil's TropCom, and Mexico's Alaska, a subsidiary of distributor Mexmal Mayorista."