Hi there,
You can use the following link, the closest option is:
Cisco Catalyst 3750 - 48TS
48 Ethernet 10/100 ports and 4 SFP ports
Other wise you shall cascade two of the above switch or you can go for the modular 4500 series.
Cisco Catalyst Switch Guide:
http://www.cisco.com/en/US/products/ps6545/prod_brochure0900aecd80357ff4.html
best regards and HTH,
Mohammed Mahmoud.