Exhibit 4.13



|              |  |                                                            |  |                                        |  |                |  |             
|------------- |  | ---------------------------------------------------------- |  | -------------------------------------- |  | -------------- |  | ------------
|LOAN NUMBER   |  | LOAN NAME                                                  |  | ACCT. NUMBER                           |  | AGREEMENT DATE |  |             
|156779        |  | Optical Cable Corporation                                  |  | 19398                                  |  | 10/26/07       |  |             
|              |  |                                                            |  |                                       
|NOTE AMOUNT   |  | INDEX (w/Margin)                                           |  | RATE                                   |  | MATURITY DATE  |  | LOAN PURPOSE
|$6,500,000.00 |  | First Phase  Not Applicable Second Phase  Not Applicable |  | First Phase - 7.5% Second Phase - 7.5% |  | 10/01/11       |  | Commercial  

AMENDMENT #1 TO COMMERCIAL LOAN AGREEMENT

Draw Loan

DATE AND PARTIES.The date of this
Amendment #1 to Commercial Loan Agreement (hereafter Amended Agreement) is October 26, 2007. The parties and their addresses are as follows:



|                        |  |                          
|----------------------- |  | -------------------------
|LENDER:                 |  | BORROWER:                
|VALLEY BANK             |  | OPTICAL CABLE CORPORATION
|                        |  | a Virginia Corporation   
|36 W. Church Ave. S.W.  |  | 5290 Concourse Drive     
|Roanoke, Virginia 24011 |  | Roanoke, Virginia 24019  

WHEREAS,by mutual agreement the parties desire to modify certain terms of that Commercial Loan Agreement
dated September 22, 2006 (Original Agreement),

NOW THEREFORE, in exchange for mutual consideration, the sufficiency of which is
hereby acknowledged, the parties agree that the Original Agreement is hereby supplemented, amended, corrected, and restated as follows:



|1) | The Original Agreement is modified by the addition of the following section:
|-- | ----------------------------------------------------------------------------

2. E. Draw Period. The loan will be single advancing note with a draw period extending through February 28, 2009.

This draw period amends and supersedes the previously stated draw period of 12 months stated in the commitment letter (p.1, section Funding: C)) dated July 17, 2006.



|2) | Except as supplemented, amended, and corrected herein, the Original Agreement otherwise remains in full force and effect.
|-- | -------------------------------------------------------------------------------------------------------------------------

SIGNATURES.By signing under seal, I agree to the terms contained in this Agreement. I also acknowledge receipt of a copy of this Agreement.



|                          |  |                          |  |        |  |                       
|------------------------- |  | ------------------------ |  | ------ |  | ----------------------
|BORROWER:                 |  | LENDER:                 
|                          | 
|Optical Cable Corporation |  | Valley Bank             
|                          |  |                          | 
|By:                       |  | /s/ Tracy G. Smith(Seal) |  | By:    |  | /s/ Scott Leffel(Seal)
|                          |  | Tracy G. Smith           |  | Name:  |  | Scott Leffel          
|                          |  | Vice President and CFO   |  | Title: |  | Vice President