Issued by: ADATAIssued on: 2021/07/09 Taipei, Taiwan, R.O.C. – July 9th, 2021 – ADATA today announced its consolidated net sales of NT$ 3.38 billion for June 2021, an increase of 22.98% year-over-year. Accumulated net sales for January to June 2021 were NT$ 19.72 billion, a 34.41% increase as compared to NT$14.67 billion for the same period in 2020. ADATA June Sales Report (Consolidated) (Unit: NT$ million) Period June-21 M-O-M Y-O-Y January to June Y-O-Y Net sales 3,385 -6.83% 22.98% 19,717 34.41% Sales by Product for June 2021: DRAM 45.18% SSD 33.92% Others 20.9% *Year 2021 figures have not been audited. Investor Relations Caroline Lin/IR Manager Tel:+886-2-8228-0886 ext.12410 Cell:+886-916-655-656 Mail: caroline_lin@adata.com Gloria Chen/ IR Director Tel:+886-2-8228-0886 ext.12400 Cell:+886-916-969-211 Mail: gloria_chen@adata.com