Miscellaneous Options4-10Your Extensa computer can accept manyadditional options, and Texas Instruments is thebest source for these options. Some of theadditonal options include:Batteries You can purchase spare batteries —Duracell NiMH or Li-Ion — from yourlocal computer store or directly fromDuracell. A list of phone numbers tocall to order the Duracell batteries islisted in your system. Simply click onthe Duracell icon to view the directory.For information on these batteries, referto Chapter 3, Using Battery Power.CarryingCaseHelps protect the computer andaccessories during transport.Several carrying cases are availableincluding leather cases, accessorycases, portfolios and backpacks.Printers You can connect a parallel printer tothe parallel port or a serial printer tothe serial port connectors.