This interface card allows you to utilize your printer via your serial port (RS232).
Microline 320 Turbo revision H0 or lower
Microline 321 Turbo revision H0 or lower
Microline 390 Turbo revision G0 or lower
Microline 391 Turbo revision G0 or lower
Microline 420 revision D0 or lower
Microline 421 revision D0 or lower
Microline 490 revision D0 or lower
Microline 491 revision D0 or lower
Note: You can locate the revision version of your printer by looking at the last two characters of the serial number located on the back of the printer. If your printer is a revision I0 or higher, you need the Okidata Serial Interface Card - New Release 44455101
*Free Shipping: qualified products will have free shipping via our choice of ground delivery methods to most addresses in the 48 continental United States. For the "FREESHIP5" coupon promotion, qualifying orders must total $500 or more (excluding tax & shipping).