NEC Express5800 User Manual page 485

6.
Insert the "OEM-Disk" into the USB floppy disk drive, and press [Browse].
IMPORTANT: If you have created "OEM-Disk" into the Flash FDD,
connect the Flash FDD.
NOTES:
In case of Installing Windows Server 2008 64-bit (x64) Edition:

Set the [Windows Server 2008 x64 OEM-Disk for
EXPRESSBUILDER].
In case of Installing Windows Server 2008 32-bit (x86) Edition:

Set the [Windows Server 2008 OEM-Disk for
EXPRESSBUILDER].
7.
[Browse for Folder] window is displayed:
<Windows Server 2008 64-bit (x64) Edition>
Select <drive letter>:\OEM-Disk\ws2008x64\megasr1, and press [OK].
<Windows Server 2008 32-bit (x86) Edition>
Select <drive letter>:\OEM-Disk\ws2008\megasr1, and press [OK].
8.
Select [LSI Embedded MegaRAID] and press [Next].
9.
Enter your product key, and then click [Next].
Installing Windows Server 2008 E-13