IBM 65X1253 Micro Channel 300/1200/2400 Internal Modem/A expansion card

This is an IBM internal modem for a PS/2 computer. Key details include: 

• Model/Part Number: 65X1253
• Type: Internal Modem/A (Micro Channel Architecture)
• Speeds: M300/1200/2400 baud
• Origin: Made in Japan
• Compliance: Certified as a Class B computing device pursuant to Subpart J of Part 15 of FCC Rules