问题：
[单选题]13. 一台兼容机,加载鼠标驱动程序后,鼠标只能左右移动,不能上下移动,经检测驱动程序安装正确,试判断故障最可能发生的部位。( )
A、串口
B、鼠标
C、主板
D、PS/2口
参考答案：
B
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