Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_269920_17 (qpi_speed__gt_s_ VARCHAR, model VARCHAR)

### Question ###
How many models numbered L5506 have a QPI speed?

### Accurate SQL ###

SELECT COUNT(qpi_speed__gt_s_) FROM table_269920_17 WHERE model = "L5506"