VisaSlots.info
The B1/B2 visa is a non-immigrant visa for the United States, intended for people visiting temporarily for business (B1), tourism (B2), or a combination of both.
Lịch thi Telc B1, B2 tiếng Đức tại Hà Nội và Hồ Chí Minh ...
You may get it on valid or expired visas in your passport for visa categories like F1 Visa, B1/B2 Visitor Visa, or even work visas like H1B or L1 visa.
Dell R740 not recongizing memory module in slot A1 - #5 by adrian ...
There are four ram slots, and they are a1,a2,b1,b2. In manual its said that a1,b1 - dual channel and a2 - b2 dual channel.